Finding the Fourth Proportional to 1,158.91, 1,737.82 and 672.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,158.91 : 1,737.82 = 672.10 : x
2. Step 2: Convert to fraction form
   1,158.91/1,737.82 = 672.10/x
3. Step 3: Cross multiply
   1,158.91x = 1,737.82 × 672.10
4. Step 4: Simplify right side
   1,158.91x = 1,167,985.32
5. Step 5: Solve for x
   x = 1,167,985.32/1,158.91
6. Step 6: Final answer
   x = 1,007.83