Finding the Fourth Proportional to 1,451.62, 2,003.43 and 891.91

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.62 : 2,003.43 = 891.91 : x
2. Step 2: Convert to fraction form
   1,451.62/2,003.43 = 891.91/x
3. Step 3: Cross multiply
   1,451.62x = 2,003.43 × 891.91
4. Step 4: Simplify right side
   1,451.62x = 1,786,879.25
5. Step 5: Solve for x
   x = 1,786,879.25/1,451.62
6. Step 6: Final answer
   x = 1,230.96