Finding the Fourth Proportional to 1,200,550.78, 1,656,768.63 and 656,697.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,200,550.78 : 1,656,768.63 = 656,697.34 : x
2. Step 2: Convert to fraction form
   1,200,550.78/1,656,768.63 = 656,697.34/x
3. Step 3: Cross multiply
   1,200,550.78x = 1,656,768.63 × 656,697.34
4. Step 4: Simplify right side
   1,200,550.78x = 1,087,995,552,316.44
5. Step 5: Solve for x
   x = 1,087,995,552,316.44/1,200,550.78
6. Step 6: Final answer
   x = 906,247.01