Finding the Fourth Proportional to 2,331.09, 3,495.06 and 1,098.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,331.09 : 3,495.06 = 1,098.72 : x
2. Step 2: Convert to fraction form
   2,331.09/3,495.06 = 1,098.72/x
3. Step 3: Cross multiply
   2,331.09x = 3,495.06 × 1,098.72
4. Step 4: Simplify right side
   2,331.09x = 3,840,092.32
5. Step 5: Solve for x
   x = 3,840,092.32/2,331.09
6. Step 6: Final answer
   x = 1,647.34