Finding the Fourth Proportional to 2,669.76, 4,003.20 and 1,026.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,669.76 : 4,003.20 = 1,026.72 : x
2. Step 2: Convert to fraction form
   2,669.76/4,003.20 = 1,026.72/x
3. Step 3: Cross multiply
   2,669.76x = 4,003.20 × 1,026.72
4. Step 4: Simplify right side
   2,669.76x = 4,110,165.50
5. Step 5: Solve for x
   x = 4,110,165.50/2,669.76
6. Step 6: Final answer
   x = 1,539.53