Finding the Fourth Proportional to 1,136,420.58, 1,568,298.06 and 620,202.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,136,420.58 : 1,568,298.06 = 620,202.72 : x
2. Step 2: Convert to fraction form
   1,136,420.58/1,568,298.06 = 620,202.72/x
3. Step 3: Cross multiply
   1,136,420.58x = 1,568,298.06 × 620,202.72
4. Step 4: Simplify right side
   1,136,420.58x = 972,662,722,582.72
5. Step 5: Solve for x
   x = 972,662,722,582.72/1,136,420.58
6. Step 6: Final answer
   x = 855,900.31