Finding the Fourth Proportional to 2,423.83, 3,636.27 and 780.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.83 : 3,636.27 = 780.50 : x
2. Step 2: Convert to fraction form
   2,423.83/3,636.27 = 780.50/x
3. Step 3: Cross multiply
   2,423.83x = 3,636.27 × 780.50
4. Step 4: Simplify right side
   2,423.83x = 2,838,123.30
5. Step 5: Solve for x
   x = 2,838,123.30/2,423.83
6. Step 6: Final answer
   x = 1,170.93