Finding the Fourth Proportional to 2,259,405.02, 3,117,978.96 and 1,240,809.86

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259,405.02 : 3,117,978.96 = 1,240,809.86 : x
2. Step 2: Convert to fraction form
   2,259,405.02/3,117,978.96 = 1,240,809.86/x
3. Step 3: Cross multiply
   2,259,405.02x = 3,117,978.96 × 1,240,809.86
4. Step 4: Simplify right side
   2,259,405.02x = 3,868,819,036,840.55
5. Step 5: Solve for x
   x = 3,868,819,036,840.55/2,259,405.02
6. Step 6: Final answer
   x = 1,712,317.62