Finding the Fourth Proportional to 2,259,012.50, 3,117,459.12 and 1,240,439.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,259,012.50 : 3,117,459.12 = 1,240,439.12 : x
2. Step 2: Convert to fraction form
   2,259,012.50/3,117,459.12 = 1,240,439.12/x
3. Step 3: Cross multiply
   2,259,012.50x = 3,117,459.12 × 1,240,439.12
4. Step 4: Simplify right side
   2,259,012.50x = 3,867,018,247,448.78
5. Step 5: Solve for x
   x = 3,867,018,247,448.78/2,259,012.50
6. Step 6: Final answer
   x = 1,711,817.99