Finding the Fourth Proportional to 1,145,101.86, 1,580,434.94 and 661,947.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,145,101.86 : 1,580,434.94 = 661,947.09 : x
2. Step 2: Convert to fraction form
   1,145,101.86/1,580,434.94 = 661,947.09/x
3. Step 3: Cross multiply
   1,145,101.86x = 1,580,434.94 × 661,947.09
4. Step 4: Simplify right side
   1,145,101.86x = 1,046,164,309,467.32
5. Step 5: Solve for x
   x = 1,046,164,309,467.32/1,145,101.86
6. Step 6: Final answer
   x = 913,599.35