Finding the Fourth Proportional to 2,073.80, 3,111.96 and 1,100.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,073.80 : 3,111.96 = 1,100.72 : x
2. Step 2: Convert to fraction form
   2,073.80/3,111.96 = 1,100.72/x
3. Step 3: Cross multiply
   2,073.80x = 3,111.96 × 1,100.72
4. Step 4: Simplify right side
   2,073.80x = 3,425,396.61
5. Step 5: Solve for x
   x = 3,425,396.61/2,073.80
6. Step 6: Final answer
   x = 1,651.75