Finding the Fourth Proportional to 1,012.32, 1,517.00 and 549.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.32 : 1,517.00 = 549.81 : x
2. Step 2: Convert to fraction form
   1,012.32/1,517.00 = 549.81/x
3. Step 3: Cross multiply
   1,012.32x = 1,517.00 × 549.81
4. Step 4: Simplify right side
   1,012.32x = 834,059.02
5. Step 5: Solve for x
   x = 834,059.02/1,012.32
6. Step 6: Final answer
   x = 823.91