Finding the Fourth Proportional to 1,355.24, 1,869.27 and 1,147.34

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355.24 : 1,869.27 = 1,147.34 : x
2. Step 2: Convert to fraction form
   1,355.24/1,869.27 = 1,147.34/x
3. Step 3: Cross multiply
   1,355.24x = 1,869.27 × 1,147.34
4. Step 4: Simplify right side
   1,355.24x = 2,144,688.24
5. Step 5: Solve for x
   x = 2,144,688.24/1,355.24
6. Step 6: Final answer
   x = 1,582.52