Finding the Fourth Proportional to 2,110.26, 3,167.31 and 1,123.91

Step by Step Solution

1. Step 1: Write the proportion equation
   2,110.26 : 3,167.31 = 1,123.91 : x
2. Step 2: Convert to fraction form
   2,110.26/3,167.31 = 1,123.91/x
3. Step 3: Cross multiply
   2,110.26x = 3,167.31 × 1,123.91
4. Step 4: Simplify right side
   2,110.26x = 3,559,755.55
5. Step 5: Solve for x
   x = 3,559,755.55/2,110.26
6. Step 6: Final answer
   x = 1,686.88