Finding the Fourth Proportional to 2,235,878.40, 3,085,507.98 and 1,217,280.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,235,878.40 : 3,085,507.98 = 1,217,280.72 : x
2. Step 2: Convert to fraction form
   2,235,878.40/3,085,507.98 = 1,217,280.72/x
3. Step 3: Cross multiply
   2,235,878.40x = 3,085,507.98 × 1,217,280.72
4. Step 4: Simplify right side
   2,235,878.40x = 3,755,929,375,460.15
5. Step 5: Solve for x
   x = 3,755,929,375,460.15/2,235,878.40
6. Step 6: Final answer
   x = 1,679,845.10