Finding the Fourth Proportional to 2,670.47, 4,002.96 and 1,281.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,670.47 : 4,002.96 = 1,281.72 : x
2. Step 2: Convert to fraction form
   2,670.47/4,002.96 = 1,281.72/x
3. Step 3: Cross multiply
   2,670.47x = 4,002.96 × 1,281.72
4. Step 4: Simplify right side
   2,670.47x = 5,130,673.89
5. Step 5: Solve for x
   x = 5,130,673.89/2,670.47
6. Step 6: Final answer
   x = 1,921.26