Finding the Fourth Proportional to 2,617.52, 3,612.20 and 1,438.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.52 : 3,612.20 = 1,438.59 : x
2. Step 2: Convert to fraction form
   2,617.52/3,612.20 = 1,438.59/x
3. Step 3: Cross multiply
   2,617.52x = 3,612.20 × 1,438.59
4. Step 4: Simplify right side
   2,617.52x = 5,196,481.15
5. Step 5: Solve for x
   x = 5,196,481.15/2,617.52
6. Step 6: Final answer
   x = 1,985.27