Finding the Fourth Proportional to 1,402.59, 2,100.69 and 672.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.59 : 2,100.69 = 672.69 : x
2. Step 2: Convert to fraction form
   1,402.59/2,100.69 = 672.69/x
3. Step 3: Cross multiply
   1,402.59x = 2,100.69 × 672.69
4. Step 4: Simplify right side
   1,402.59x = 1,413,113.16
5. Step 5: Solve for x
   x = 1,413,113.16/1,402.59
6. Step 6: Final answer
   x = 1,007.50