Finding the Fourth Proportional to 1,338.55, 1,847.83 and 1,025.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,338.55 : 1,847.83 = 1,025.12 : x
2. Step 2: Convert to fraction form
   1,338.55/1,847.83 = 1,025.12/x
3. Step 3: Cross multiply
   1,338.55x = 1,847.83 × 1,025.12
4. Step 4: Simplify right side
   1,338.55x = 1,894,247.49
5. Step 5: Solve for x
   x = 1,894,247.49/1,338.55
6. Step 6: Final answer
   x = 1,415.15