Finding the Fourth Proportional to 1,548.42, 2,134.46 and 1,311.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,548.42 : 2,134.46 = 1,311.50 : x
2. Step 2: Convert to fraction form
   1,548.42/2,134.46 = 1,311.50/x
3. Step 3: Cross multiply
   1,548.42x = 2,134.46 × 1,311.50
4. Step 4: Simplify right side
   1,548.42x = 2,799,336.90
5. Step 5: Solve for x
   x = 2,799,336.90/1,548.42
6. Step 6: Final answer
   x = 1,807.87