Finding the Fourth Proportional to 2,129.10, 3,187.89 and 1,100.94

Step by Step Solution

1. Step 1: Write the proportion equation
   2,129.10 : 3,187.89 = 1,100.94 : x
2. Step 2: Convert to fraction form
   2,129.10/3,187.89 = 1,100.94/x
3. Step 3: Cross multiply
   2,129.10x = 3,187.89 × 1,100.94
4. Step 4: Simplify right side
   2,129.10x = 3,509,675.62
5. Step 5: Solve for x
   x = 3,509,675.62/2,129.10
6. Step 6: Final answer
   x = 1,648.43