Finding the Fourth Proportional to 1,247.37, 1,871.49 and 554.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,247.37 : 1,871.49 = 554.52 : x
2. Step 2: Convert to fraction form
   1,247.37/1,871.49 = 554.52/x
3. Step 3: Cross multiply
   1,247.37x = 1,871.49 × 554.52
4. Step 4: Simplify right side
   1,247.37x = 1,037,784.10
5. Step 5: Solve for x
   x = 1,037,784.10/1,247.37
6. Step 6: Final answer
   x = 831.98