Finding the Fourth Proportional to 1,299,870.72, 1,794,069.56 and 870,898.80

Step by Step Solution

1. Step 1: Write the proportion equation
   1,299,870.72 : 1,794,069.56 = 870,898.80 : x
2. Step 2: Convert to fraction form
   1,299,870.72/1,794,069.56 = 870,898.80/x
3. Step 3: Cross multiply
   1,299,870.72x = 1,794,069.56 × 870,898.80
4. Step 4: Simplify right side
   1,299,870.72x = 1,562,453,026,920.53
5. Step 5: Solve for x
   x = 1,562,453,026,920.53/1,299,870.72
6. Step 6: Final answer
   x = 1,202,006.48