Finding the Fourth Proportional to 1,521.72, 2,101.26 and 1,270.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,521.72 : 2,101.26 = 1,270.52 : x
2. Step 2: Convert to fraction form
   1,521.72/2,101.26 = 1,270.52/x
3. Step 3: Cross multiply
   1,521.72x = 2,101.26 × 1,270.52
4. Step 4: Simplify right side
   1,521.72x = 2,669,692.86
5. Step 5: Solve for x
   x = 2,669,692.86/1,521.72
6. Step 6: Final answer
   x = 1,754.39