Finding the Fourth Proportional to 1,451.91, 2,003.67 and 813.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,451.91 : 2,003.67 = 813.83 : x
2. Step 2: Convert to fraction form
   1,451.91/2,003.67 = 813.83/x
3. Step 3: Cross multiply
   1,451.91x = 2,003.67 × 813.83
4. Step 4: Simplify right side
   1,451.91x = 1,630,636.74
5. Step 5: Solve for x
   x = 1,630,636.74/1,451.91
6. Step 6: Final answer
   x = 1,123.10