Finding the Fourth Proportional to 1,337.69, 1,845.91 and 813.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.69 : 1,845.91 = 813.89 : x
2. Step 2: Convert to fraction form
   1,337.69/1,845.91 = 813.89/x
3. Step 3: Cross multiply
   1,337.69x = 1,845.91 × 813.89
4. Step 4: Simplify right side
   1,337.69x = 1,502,367.69
5. Step 5: Solve for x
   x = 1,502,367.69/1,337.69
6. Step 6: Final answer
   x = 1,123.11