Finding the Fourth Proportional to 1,003.02, 1,502.60 and 570.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.02 : 1,502.60 = 570.48 : x
2. Step 2: Convert to fraction form
   1,003.02/1,502.60 = 570.48/x
3. Step 3: Cross multiply
   1,003.02x = 1,502.60 × 570.48
4. Step 4: Simplify right side
   1,003.02x = 857,200.40
5. Step 5: Solve for x
   x = 857,200.40/1,003.02
6. Step 6: Final answer
   x = 854.62