Finding the Fourth Proportional to 2,659.50, 3,988.71 and 1,015.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,659.50 : 3,988.71 = 1,015.47 : x
2. Step 2: Convert to fraction form
   2,659.50/3,988.71 = 1,015.47/x
3. Step 3: Cross multiply
   2,659.50x = 3,988.71 × 1,015.47
4. Step 4: Simplify right side
   2,659.50x = 4,050,415.34
5. Step 5: Solve for x
   x = 4,050,415.34/2,659.50
6. Step 6: Final answer
   x = 1,523.00