Finding the Fourth Proportional to 1,530.08, 2,109.28 and 1,131.15

Step by Step Solution

1. Step 1: Write the proportion equation
   1,530.08 : 2,109.28 = 1,131.15 : x
2. Step 2: Convert to fraction form
   1,530.08/2,109.28 = 1,131.15/x
3. Step 3: Cross multiply
   1,530.08x = 2,109.28 × 1,131.15
4. Step 4: Simplify right side
   1,530.08x = 2,385,912.07
5. Step 5: Solve for x
   x = 2,385,912.07/1,530.08
6. Step 6: Final answer
   x = 1,559.34