Finding the Fourth Proportional to 1,672.69, 2,508.42 and 748.07

Step by Step Solution

1. Step 1: Write the proportion equation
   1,672.69 : 2,508.42 = 748.07 : x
2. Step 2: Convert to fraction form
   1,672.69/2,508.42 = 748.07/x
3. Step 3: Cross multiply
   1,672.69x = 2,508.42 × 748.07
4. Step 4: Simplify right side
   1,672.69x = 1,876,473.75
5. Step 5: Solve for x
   x = 1,876,473.75/1,672.69
6. Step 6: Final answer
   x = 1,121.83