Finding the Fourth Proportional to 3,247.31, 4,869.88 and 1,055.50

Step by Step Solution

1. Step 1: Write the proportion equation
   3,247.31 : 4,869.88 = 1,055.50 : x
2. Step 2: Convert to fraction form
   3,247.31/4,869.88 = 1,055.50/x
3. Step 3: Cross multiply
   3,247.31x = 4,869.88 × 1,055.50
4. Step 4: Simplify right side
   3,247.31x = 5,140,158.34
5. Step 5: Solve for x
   x = 5,140,158.34/3,247.31
6. Step 6: Final answer
   x = 1,582.90