Finding the Fourth Proportional to 1,229.72, 1,695.71 and 914.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,229.72 : 1,695.71 = 914.48 : x
2. Step 2: Convert to fraction form
   1,229.72/1,695.71 = 914.48/x
3. Step 3: Cross multiply
   1,229.72x = 1,695.71 × 914.48
4. Step 4: Simplify right side
   1,229.72x = 1,550,692.88
5. Step 5: Solve for x
   x = 1,550,692.88/1,229.72
6. Step 6: Final answer
   x = 1,261.01