Finding the Fourth Proportional to 1,538.56, 2,124.08 and 1,015.50

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538.56 : 2,124.08 = 1,015.50 : x
2. Step 2: Convert to fraction form
   1,538.56/2,124.08 = 1,015.50/x
3. Step 3: Cross multiply
   1,538.56x = 2,124.08 × 1,015.50
4. Step 4: Simplify right side
   1,538.56x = 2,157,003.24
5. Step 5: Solve for x
   x = 2,157,003.24/1,538.56
6. Step 6: Final answer
   x = 1,401.96