Finding the Fourth Proportional to 1,373.33, 1,895.31 and 813.92

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.33 : 1,895.31 = 813.92 : x
2. Step 2: Convert to fraction form
   1,373.33/1,895.31 = 813.92/x
3. Step 3: Cross multiply
   1,373.33x = 1,895.31 × 813.92
4. Step 4: Simplify right side
   1,373.33x = 1,542,630.72
5. Step 5: Solve for x
   x = 1,542,630.72/1,373.33
6. Step 6: Final answer
   x = 1,123.28