Finding the Fourth Proportional to 1,175,866,605.20, 1,622,683,038.06 and 647,219,288.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,175,866,605.20 : 1,622,683,038.06 = 647,219,288.72 : x
2. Step 2: Convert to fraction form
   1,175,866,605.20/1,622,683,038.06 = 647,219,288.72/x
3. Step 3: Cross multiply
   1,175,866,605.20x = 1,622,683,038.06 × 647,219,288.72
4. Step 4: Simplify right side
   1,175,866,605.20x = 1,050,231,761,711,201,920
5. Step 5: Solve for x
   x = 1,050,231,761,711,201,920/1,175,866,605.20
6. Step 6: Final answer
   x = 893,155,530.62