Finding the Fourth Proportional to 3,541.72, 5,312.80 and 1,076.72

Step by Step Solution

1. Step 1: Write the proportion equation
   3,541.72 : 5,312.80 = 1,076.72 : x
2. Step 2: Convert to fraction form
   3,541.72/5,312.80 = 1,076.72/x
3. Step 3: Cross multiply
   3,541.72x = 5,312.80 × 1,076.72
4. Step 4: Simplify right side
   3,541.72x = 5,720,398.02
5. Step 5: Solve for x
   x = 5,720,398.02/3,541.72
6. Step 6: Final answer
   x = 1,615.15