Finding the Fourth Proportional to 1,926.72, 2,658.90 and 1,129.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,926.72 : 2,658.90 = 1,129.86 : x
2. Step 2: Convert to fraction form
   1,926.72/2,658.90 = 1,129.86/x
3. Step 3: Cross multiply
   1,926.72x = 2,658.90 × 1,129.86
4. Step 4: Simplify right side
   1,926.72x = 3,004,184.75
5. Step 5: Solve for x
   x = 3,004,184.75/1,926.72
6. Step 6: Final answer
   x = 1,559.22