Finding the Fourth Proportional to 2,599.41, 3,900.93 and 1,138.98

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.41 : 3,900.93 = 1,138.98 : x
2. Step 2: Convert to fraction form
   2,599.41/3,900.93 = 1,138.98/x
3. Step 3: Cross multiply
   2,599.41x = 3,900.93 × 1,138.98
4. Step 4: Simplify right side
   2,599.41x = 4,443,081.25
5. Step 5: Solve for x
   x = 4,443,081.25/2,599.41
6. Step 6: Final answer
   x = 1,709.27