Finding the Fourth Proportional to 1,375.49, 1,898.16 and 786.17

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.49 : 1,898.16 = 786.17 : x
2. Step 2: Convert to fraction form
   1,375.49/1,898.16 = 786.17/x
3. Step 3: Cross multiply
   1,375.49x = 1,898.16 × 786.17
4. Step 4: Simplify right side
   1,375.49x = 1,492,276.45
5. Step 5: Solve for x
   x = 1,492,276.45/1,375.49
6. Step 6: Final answer
   x = 1,084.91