Finding the Fourth Proportional to 1,665.28, 2,498.32 and 554.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,665.28 : 2,498.32 = 554.69 : x
2. Step 2: Convert to fraction form
   1,665.28/2,498.32 = 554.69/x
3. Step 3: Cross multiply
   1,665.28x = 2,498.32 × 554.69
4. Step 4: Simplify right side
   1,665.28x = 1,385,793.12
5. Step 5: Solve for x
   x = 1,385,793.12/1,665.28
6. Step 6: Final answer
   x = 832.17