Finding the Fourth Proportional to 2,617.32, 3,612.13 and 1,438.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,617.32 : 3,612.13 = 1,438.62 : x
2. Step 2: Convert to fraction form
   2,617.32/3,612.13 = 1,438.62/x
3. Step 3: Cross multiply
   2,617.32x = 3,612.13 × 1,438.62
4. Step 4: Simplify right side
   2,617.32x = 5,196,482.46
5. Step 5: Solve for x
   x = 5,196,482.46/2,617.32
6. Step 6: Final answer
   x = 1,985.42