Finding the Fourth Proportional to 1,526.25, 2,108.22 and 1,128.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.25 : 2,108.22 = 1,128.72 : x
2. Step 2: Convert to fraction form
   1,526.25/2,108.22 = 1,128.72/x
3. Step 3: Cross multiply
   1,526.25x = 2,108.22 × 1,128.72
4. Step 4: Simplify right side
   1,526.25x = 2,379,590.08
5. Step 5: Solve for x
   x = 2,379,590.08/1,526.25
6. Step 6: Final answer
   x = 1,559.11