Finding the Fourth Proportional to 1,002.76, 1,384.24 and 609.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.76 : 1,384.24 = 609.92 : x
2. Step 2: Convert to fraction form
   1,002.76/1,384.24 = 609.92/x
3. Step 3: Cross multiply
   1,002.76x = 1,384.24 × 609.92
4. Step 4: Simplify right side
   1,002.76x = 844,275.66
5. Step 5: Solve for x
   x = 844,275.66/1,002.76
6. Step 6: Final answer
   x = 841.95