Finding the Fourth Proportional to 1,650.81, 2,475.04 and 772.83

Step by Step Solution

1. Step 1: Write the proportion equation
   1,650.81 : 2,475.04 = 772.83 : x
2. Step 2: Convert to fraction form
   1,650.81/2,475.04 = 772.83/x
3. Step 3: Cross multiply
   1,650.81x = 2,475.04 × 772.83
4. Step 4: Simplify right side
   1,650.81x = 1,912,792.51
5. Step 5: Solve for x
   x = 1,912,792.51/1,650.81
6. Step 6: Final answer
   x = 1,158.70