Finding the Fourth Proportional to 1,177,498.95, 1,624,978.40 and 661,294.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,177,498.95 : 1,624,978.40 = 661,294.05 : x
2. Step 2: Convert to fraction form
   1,177,498.95/1,624,978.40 = 661,294.05/x
3. Step 3: Cross multiply
   1,177,498.95x = 1,624,978.40 × 661,294.05
4. Step 4: Simplify right side
   1,177,498.95x = 1,074,588,543,992.05
5. Step 5: Solve for x
   x = 1,074,588,543,992.05/1,177,498.95
6. Step 6: Final answer
   x = 912,602.55