Finding the Fourth Proportional to 1,139,105.15, 1,708,659.39 and 465,186.47

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,105.15 : 1,708,659.39 = 465,186.47 : x
2. Step 2: Convert to fraction form
   1,139,105.15/1,708,659.39 = 465,186.47/x
3. Step 3: Cross multiply
   1,139,105.15x = 1,708,659.39 × 465,186.47
4. Step 4: Simplify right side
   1,139,105.15x = 794,845,223,267.61
5. Step 5: Solve for x
   x = 794,845,223,267.61/1,139,105.15
6. Step 6: Final answer
   x = 697,780.38