Finding the Fourth Proportional to 2,139,339.47, 2,952,311.10 and 1,172,448.56

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,339.47 : 2,952,311.10 = 1,172,448.56 : x
2. Step 2: Convert to fraction form
   2,139,339.47/2,952,311.10 = 1,172,448.56/x
3. Step 3: Cross multiply
   2,139,339.47x = 2,952,311.10 × 1,172,448.56
4. Step 4: Simplify right side
   2,139,339.47x = 3,461,432,897,867.02
5. Step 5: Solve for x
   x = 3,461,432,897,867.02/2,139,339.47
6. Step 6: Final answer
   x = 1,617,991.42