Finding the Fourth Proportional to 1,375.71, 1,898.49 and 786.24

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.71 : 1,898.49 = 786.24 : x
2. Step 2: Convert to fraction form
   1,375.71/1,898.49 = 786.24/x
3. Step 3: Cross multiply
   1,375.71x = 1,898.49 × 786.24
4. Step 4: Simplify right side
   1,375.71x = 1,492,668.78
5. Step 5: Solve for x
   x = 1,492,668.78/1,375.71
6. Step 6: Final answer
   x = 1,085.02