Finding the Fourth Proportional to 1,761.90, 2,431.56 and 1,098.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,761.90 : 2,431.56 = 1,098.84 : x
2. Step 2: Convert to fraction form
   1,761.90/2,431.56 = 1,098.84/x
3. Step 3: Cross multiply
   1,761.90x = 2,431.56 × 1,098.84
4. Step 4: Simplify right side
   1,761.90x = 2,671,895.39
5. Step 5: Solve for x
   x = 2,671,895.39/1,761.90
6. Step 6: Final answer
   x = 1,516.49