Finding the Fourth Proportional to 2,045.04, 3,069.31 and 813.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,045.04 : 3,069.31 = 813.32 : x
2. Step 2: Convert to fraction form
   2,045.04/3,069.31 = 813.32/x
3. Step 3: Cross multiply
   2,045.04x = 3,069.31 × 813.32
4. Step 4: Simplify right side
   2,045.04x = 2,496,315.86
5. Step 5: Solve for x
   x = 2,496,315.86/2,045.04
6. Step 6: Final answer
   x = 1,220.67