Finding the Fourth Proportional to 1,376.46, 1,899.42 and 786.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,376.46 : 1,899.42 = 786.96 : x
2. Step 2: Convert to fraction form
   1,376.46/1,899.42 = 786.96/x
3. Step 3: Cross multiply
   1,376.46x = 1,899.42 × 786.96
4. Step 4: Simplify right side
   1,376.46x = 1,494,767.56
5. Step 5: Solve for x
   x = 1,494,767.56/1,376.46
6. Step 6: Final answer
   x = 1,085.95