Finding the Fourth Proportional to 1,149.31, 1,714.01 and 1,121.37

Step by Step Solution

1. Step 1: Write the proportion equation
   1,149.31 : 1,714.01 = 1,121.37 : x
2. Step 2: Convert to fraction form
   1,149.31/1,714.01 = 1,121.37/x
3. Step 3: Cross multiply
   1,149.31x = 1,714.01 × 1,121.37
4. Step 4: Simplify right side
   1,149.31x = 1,922,039.39
5. Step 5: Solve for x
   x = 1,922,039.39/1,149.31
6. Step 6: Final answer
   x = 1,672.34