Finding the Fourth Proportional to 1,250.57, 1,875.86 and 384.88

Step by Step Solution

1. Step 1: Write the proportion equation
   1,250.57 : 1,875.86 = 384.88 : x
2. Step 2: Convert to fraction form
   1,250.57/1,875.86 = 384.88/x
3. Step 3: Cross multiply
   1,250.57x = 1,875.86 × 384.88
4. Step 4: Simplify right side
   1,250.57x = 721,969.69
5. Step 5: Solve for x
   x = 721,969.69/1,250.57
6. Step 6: Final answer
   x = 577.31