Finding the Fourth Proportional to 1,098.82, 1,648.42 and 551.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,098.82 : 1,648.42 = 551.02 : x
2. Step 2: Convert to fraction form
   1,098.82/1,648.42 = 551.02/x
3. Step 3: Cross multiply
   1,098.82x = 1,648.42 × 551.02
4. Step 4: Simplify right side
   1,098.82x = 908,312.39
5. Step 5: Solve for x
   x = 908,312.39/1,098.82
6. Step 6: Final answer
   x = 826.63