Finding the Fourth Proportional to 1,321.74, 1,826.27 and 1,155.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,321.74 : 1,826.27 = 1,155.69 : x
2. Step 2: Convert to fraction form
   1,321.74/1,826.27 = 1,155.69/x
3. Step 3: Cross multiply
   1,321.74x = 1,826.27 × 1,155.69
4. Step 4: Simplify right side
   1,321.74x = 2,110,600.53
5. Step 5: Solve for x
   x = 2,110,600.53/1,321.74
6. Step 6: Final answer
   x = 1,596.83