Finding the Fourth Proportional to 1,411.86, 1,948.35 and 773.85

Step by Step Solution

1. Step 1: Write the proportion equation
   1,411.86 : 1,948.35 = 773.85 : x
2. Step 2: Convert to fraction form
   1,411.86/1,948.35 = 773.85/x
3. Step 3: Cross multiply
   1,411.86x = 1,948.35 × 773.85
4. Step 4: Simplify right side
   1,411.86x = 1,507,730.65
5. Step 5: Solve for x
   x = 1,507,730.65/1,411.86
6. Step 6: Final answer
   x = 1,067.90