Finding the Fourth Proportional to 2,423.94, 3,635.72 and 780.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,423.94 : 3,635.72 = 780.06 : x
2. Step 2: Convert to fraction form
   2,423.94/3,635.72 = 780.06/x
3. Step 3: Cross multiply
   2,423.94x = 3,635.72 × 780.06
4. Step 4: Simplify right side
   2,423.94x = 2,836,079.74
5. Step 5: Solve for x
   x = 2,836,079.74/2,423.94
6. Step 6: Final answer
   x = 1,170.03