Finding the Fourth Proportional to 2,650.56, 3,972.82 and 1,261.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,650.56 : 3,972.82 = 1,261.93 : x
2. Step 2: Convert to fraction form
   2,650.56/3,972.82 = 1,261.93/x
3. Step 3: Cross multiply
   2,650.56x = 3,972.82 × 1,261.93
4. Step 4: Simplify right side
   2,650.56x = 5,013,420.74
5. Step 5: Solve for x
   x = 5,013,420.74/2,650.56
6. Step 6: Final answer
   x = 1,891.46