Finding the Fourth Proportional to 1,201,196.10, 1,657,650.72 and 657,331.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,201,196.10 : 1,657,650.72 = 657,331.86 : x
2. Step 2: Convert to fraction form
   1,201,196.10/1,657,650.72 = 657,331.86/x
3. Step 3: Cross multiply
   1,201,196.10x = 1,657,650.72 × 657,331.86
4. Step 4: Simplify right side
   1,201,196.10x = 1,089,626,631,007.94
5. Step 5: Solve for x
   x = 1,089,626,631,007.94/1,201,196.10
6. Step 6: Final answer
   x = 907,118.02