Finding the Fourth Proportional to 1,538.29, 2,123.72 and 1,015.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,538.29 : 2,123.72 = 1,015.84 : x
2. Step 2: Convert to fraction form
   1,538.29/2,123.72 = 1,015.84/x
3. Step 3: Cross multiply
   1,538.29x = 2,123.72 × 1,015.84
4. Step 4: Simplify right side
   1,538.29x = 2,157,359.72
5. Step 5: Solve for x
   x = 2,157,359.72/1,538.29
6. Step 6: Final answer
   x = 1,402.44