Finding the Fourth Proportional to 2,660.01, 3,990.28 and 1,017.93

Step by Step Solution

1. Step 1: Write the proportion equation
   2,660.01 : 3,990.28 = 1,017.93 : x
2. Step 2: Convert to fraction form
   2,660.01/3,990.28 = 1,017.93/x
3. Step 3: Cross multiply
   2,660.01x = 3,990.28 × 1,017.93
4. Step 4: Simplify right side
   2,660.01x = 4,061,825.72
5. Step 5: Solve for x
   x = 4,061,825.72/2,660.01
6. Step 6: Final answer
   x = 1,527.00