Finding the Fourth Proportional to 1,375.62, 1,898.34 and 786.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,375.62 : 1,898.34 = 786.12 : x
2. Step 2: Convert to fraction form
   1,375.62/1,898.34 = 786.12/x
3. Step 3: Cross multiply
   1,375.62x = 1,898.34 × 786.12
4. Step 4: Simplify right side
   1,375.62x = 1,492,323.04
5. Step 5: Solve for x
   x = 1,492,323.04/1,375.62
6. Step 6: Final answer
   x = 1,084.84