Finding the Fourth Proportional to 1,379.10, 2,068.41 and 834.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,379.10 : 2,068.41 = 834.78 : x
2. Step 2: Convert to fraction form
   1,379.10/2,068.41 = 834.78/x
3. Step 3: Cross multiply
   1,379.10x = 2,068.41 × 834.78
4. Step 4: Simplify right side
   1,379.10x = 1,726,667.30
5. Step 5: Solve for x
   x = 1,726,667.30/1,379.10
6. Step 6: Final answer
   x = 1,252.02