Finding the Fourth Proportional to 1,376.42, 1,899.46 and 786.95

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.42 : 1,899.46 = 786.95 : x
2. Step 2: Convert to fraction form
   1,376.42/1,899.46 = 786.95/x
3. Step 3: Cross multiply
   1,376.42x = 1,899.46 × 786.95
4. Step 4: Simplify right side
   1,376.42x = 1,494,780.05
5. Step 5: Solve for x
   x = 1,494,780.05/1,376.42
6. Step 6: Final answer
   x = 1,085.99