Finding the Fourth Proportional to 2,633.81, 3,951.25 and 784.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,633.81 : 3,951.25 = 784.89 : x
2. Step 2: Convert to fraction form
   2,633.81/3,951.25 = 784.89/x
3. Step 3: Cross multiply
   2,633.81x = 3,951.25 × 784.89
4. Step 4: Simplify right side
   2,633.81x = 3,101,294.65
5. Step 5: Solve for x
   x = 3,101,294.65/2,633.81
6. Step 6: Final answer
   x = 1,177.50