Finding the Fourth Proportional to 2,245.60, 3,367.32 and 784.72

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.60 : 3,367.32 = 784.72 : x
2. Step 2: Convert to fraction form
   2,245.60/3,367.32 = 784.72/x
3. Step 3: Cross multiply
   2,245.60x = 3,367.32 × 784.72
4. Step 4: Simplify right side
   2,245.60x = 2,642,403.35
5. Step 5: Solve for x
   x = 2,642,403.35/2,245.60
6. Step 6: Final answer
   x = 1,176.70