Finding the Fourth Proportional to 1,003.48, 1,384.95 and 610.43

Step by Step Solution

1. Step 1: Write the proportion equation
   1,003.48 : 1,384.95 = 610.43 : x
2. Step 2: Convert to fraction form
   1,003.48/1,384.95 = 610.43/x
3. Step 3: Cross multiply
   1,003.48x = 1,384.95 × 610.43
4. Step 4: Simplify right side
   1,003.48x = 845,411.57
5. Step 5: Solve for x
   x = 845,411.57/1,003.48
6. Step 6: Final answer
   x = 842.48