Finding the Fourth Proportional to 1,451.89, 2,003.76 and 862.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.89 : 2,003.76 = 862.48 : x
2. Step 2: Convert to fraction form
   1,451.89/2,003.76 = 862.48/x
3. Step 3: Cross multiply
   1,451.89x = 2,003.76 × 862.48
4. Step 4: Simplify right side
   1,451.89x = 1,728,188.59
5. Step 5: Solve for x
   x = 1,728,188.59/1,451.89
6. Step 6: Final answer
   x = 1,190.31