Finding the Fourth Proportional to 1,451.90, 2,002.91 and 862.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.90 : 2,002.91 = 862.01 : x
2. Step 2: Convert to fraction form
   1,451.90/2,002.91 = 862.01/x
3. Step 3: Cross multiply
   1,451.90x = 2,002.91 × 862.01
4. Step 4: Simplify right side
   1,451.90x = 1,726,514.12
5. Step 5: Solve for x
   x = 1,726,514.12/1,451.90
6. Step 6: Final answer
   x = 1,189.15