Finding the Fourth Proportional to 2,108,691.83, 2,909,998.67 and 1,178,399.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,108,691.83 : 2,909,998.67 = 1,178,399.57 : x
2. Step 2: Convert to fraction form
   2,108,691.83/2,909,998.67 = 1,178,399.57/x
3. Step 3: Cross multiply
   2,108,691.83x = 2,909,998.67 × 1,178,399.57
4. Step 4: Simplify right side
   2,108,691.83x = 3,429,141,181,428.57
5. Step 5: Solve for x
   x = 3,429,141,181,428.57/2,108,691.83
6. Step 6: Final answer
   x = 1,626,193.61