Finding the Fourth Proportional to 2,124.50, 3,186.61 and 1,083.85

Step by Step Solution

1. Step 1: Write the proportion equation
   2,124.50 : 3,186.61 = 1,083.85 : x
2. Step 2: Convert to fraction form
   2,124.50/3,186.61 = 1,083.85/x
3. Step 3: Cross multiply
   2,124.50x = 3,186.61 × 1,083.85
4. Step 4: Simplify right side
   2,124.50x = 3,453,796.57
5. Step 5: Solve for x
   x = 3,453,796.57/2,124.50
6. Step 6: Final answer
   x = 1,625.70