Finding the Fourth Proportional to 1,838.40, 2,756.69 and 960.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,838.40 : 2,756.69 = 960.77 : x
2. Step 2: Convert to fraction form
   1,838.40/2,756.69 = 960.77/x
3. Step 3: Cross multiply
   1,838.40x = 2,756.69 × 960.77
4. Step 4: Simplify right side
   1,838.40x = 2,648,526.46
5. Step 5: Solve for x
   x = 2,648,526.46/1,838.40
6. Step 6: Final answer
   x = 1,440.67