Finding the Fourth Proportional to 2,087.64, 3,127.32 and 1,098.96

Step by Step Solution

1. Step 1: Write the proportion equation
   2,087.64 : 3,127.32 = 1,098.96 : x
2. Step 2: Convert to fraction form
   2,087.64/3,127.32 = 1,098.96/x
3. Step 3: Cross multiply
   2,087.64x = 3,127.32 × 1,098.96
4. Step 4: Simplify right side
   2,087.64x = 3,436,799.59
5. Step 5: Solve for x
   x = 3,436,799.59/2,087.64
6. Step 6: Final answer
   x = 1,646.26