Finding the Fourth Proportional to 1,057.06, 1,581.63 and 1,001.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,057.06 : 1,581.63 = 1,001.50 : x
2. Step 2: Convert to fraction form
   1,057.06/1,581.63 = 1,001.50/x
3. Step 3: Cross multiply
   1,057.06x = 1,581.63 × 1,001.50
4. Step 4: Simplify right side
   1,057.06x = 1,584,002.45
5. Step 5: Solve for x
   x = 1,584,002.45/1,057.06
6. Step 6: Final answer
   x = 1,498.50