Finding the Fourth Proportional to 2,599.34, 3,898.98 and 1,138.62

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.34 : 3,898.98 = 1,138.62 : x
2. Step 2: Convert to fraction form
   2,599.34/3,898.98 = 1,138.62/x
3. Step 3: Cross multiply
   2,599.34x = 3,898.98 × 1,138.62
4. Step 4: Simplify right side
   2,599.34x = 4,439,456.61
5. Step 5: Solve for x
   x = 4,439,456.61/2,599.34
6. Step 6: Final answer
   x = 1,707.92