Finding the Fourth Proportional to 2,083.32, 3,126.20 and 1,109.70

Step by Step Solution

1. Step 1: Write the proportion equation
   2,083.32 : 3,126.20 = 1,109.70 : x
2. Step 2: Convert to fraction form
   2,083.32/3,126.20 = 1,109.70/x
3. Step 3: Cross multiply
   2,083.32x = 3,126.20 × 1,109.70
4. Step 4: Simplify right side
   2,083.32x = 3,469,138.59
5. Step 5: Solve for x
   x = 3,469,138.59/2,083.32
6. Step 6: Final answer
   x = 1,665.20