Finding the Fourth Proportional to 2,820.13, 4,229.89 and 740.34

Step by Step Solution

1. Step 1: Write the proportion equation
   2,820.13 : 4,229.89 = 740.34 : x
2. Step 2: Convert to fraction form
   2,820.13/4,229.89 = 740.34/x
3. Step 3: Cross multiply
   2,820.13x = 4,229.89 × 740.34
4. Step 4: Simplify right side
   2,820.13x = 3,131,573.55
5. Step 5: Solve for x
   x = 3,131,573.55/2,820.13
6. Step 6: Final answer
   x = 1,110.44