Finding the Fourth Proportional to 1,340.32, 1,849.83 and 780.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.32 : 1,849.83 = 780.96 : x
2. Step 2: Convert to fraction form
   1,340.32/1,849.83 = 780.96/x
3. Step 3: Cross multiply
   1,340.32x = 1,849.83 × 780.96
4. Step 4: Simplify right side
   1,340.32x = 1,444,639.33
5. Step 5: Solve for x
   x = 1,444,639.33/1,340.32
6. Step 6: Final answer
   x = 1,077.83