Finding the Fourth Proportional to 1,337.40, 1,844.91 and 813.06

Step by Step Solution

1. Step 1: Write the proportion equation
   1,337.40 : 1,844.91 = 813.06 : x
2. Step 2: Convert to fraction form
   1,337.40/1,844.91 = 813.06/x
3. Step 3: Cross multiply
   1,337.40x = 1,844.91 × 813.06
4. Step 4: Simplify right side
   1,337.40x = 1,500,022.52
5. Step 5: Solve for x
   x = 1,500,022.52/1,337.40
6. Step 6: Final answer
   x = 1,121.60