Finding the Fourth Proportional to 1,190,061.57, 1,642,053.87 and 706,778.31

Step by Step Solution

1. Step 1: Write the proportion equation
   1,190,061.57 : 1,642,053.87 = 706,778.31 : x
2. Step 2: Convert to fraction form
   1,190,061.57/1,642,053.87 = 706,778.31/x
3. Step 3: Cross multiply
   1,190,061.57x = 1,642,053.87 × 706,778.31
4. Step 4: Simplify right side
   1,190,061.57x = 1,160,568,059,167.56
5. Step 5: Solve for x
   x = 1,160,568,059,167.56/1,190,061.57
6. Step 6: Final answer
   x = 975,216.82