Finding the Fourth Proportional to 1,709.74, 2,358.52 and 1,143.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,709.74 : 2,358.52 = 1,143.55 : x
2. Step 2: Convert to fraction form
   1,709.74/2,358.52 = 1,143.55/x
3. Step 3: Cross multiply
   1,709.74x = 2,358.52 × 1,143.55
4. Step 4: Simplify right side
   1,709.74x = 2,697,085.55
5. Step 5: Solve for x
   x = 2,697,085.55/1,709.74
6. Step 6: Final answer
   x = 1,577.48