Finding the Fourth Proportional to 1,530.72, 2,294.72 and 1,140.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.72 : 2,294.72 = 1,140.25 : x
2. Step 2: Convert to fraction form
   1,530.72/2,294.72 = 1,140.25/x
3. Step 3: Cross multiply
   1,530.72x = 2,294.72 × 1,140.25
4. Step 4: Simplify right side
   1,530.72x = 2,616,554.48
5. Step 5: Solve for x
   x = 2,616,554.48/1,530.72
6. Step 6: Final answer
   x = 1,709.36