Finding the Fourth Proportional to 1,123,501.34, 1,550,232.55 and 664,635.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,123,501.34 : 1,550,232.55 = 664,635.25 : x
2. Step 2: Convert to fraction form
   1,123,501.34/1,550,232.55 = 664,635.25/x
3. Step 3: Cross multiply
   1,123,501.34x = 1,550,232.55 × 664,635.25
4. Step 4: Simplify right side
   1,123,501.34x = 1,030,339,187,353.05
5. Step 5: Solve for x
   x = 1,030,339,187,353.05/1,123,501.34
6. Step 6: Final answer
   x = 917,078.74