Finding the Fourth Proportional to 1,337.76, 1,845.72 and 813.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.76 : 1,845.72 = 813.96 : x
2. Step 2: Convert to fraction form
   1,337.76/1,845.72 = 813.96/x
3. Step 3: Cross multiply
   1,337.76x = 1,845.72 × 813.96
4. Step 4: Simplify right side
   1,337.76x = 1,502,342.25
5. Step 5: Solve for x
   x = 1,502,342.25/1,337.76
6. Step 6: Final answer
   x = 1,123.03