Finding the Fourth Proportional to 1,534.72, 2,300.28 and 1,040.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,534.72 : 2,300.28 = 1,040.08 : x
2. Step 2: Convert to fraction form
   1,534.72/2,300.28 = 1,040.08/x
3. Step 3: Cross multiply
   1,534.72x = 2,300.28 × 1,040.08
4. Step 4: Simplify right side
   1,534.72x = 2,392,475.22
5. Step 5: Solve for x
   x = 2,392,475.22/1,534.72
6. Step 6: Final answer
   x = 1,558.90