Finding the Fourth Proportional to 1,048.40, 1,570.16 and 498.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,048.40 : 1,570.16 = 498.82 : x
2. Step 2: Convert to fraction form
   1,048.40/1,570.16 = 498.82/x
3. Step 3: Cross multiply
   1,048.40x = 1,570.16 × 498.82
4. Step 4: Simplify right side
   1,048.40x = 783,227.21
5. Step 5: Solve for x
   x = 783,227.21/1,048.40
6. Step 6: Final answer
   x = 747.07