Finding the Fourth Proportional to 2,245.35, 3,369.55 and 784.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,245.35 : 3,369.55 = 784.50 : x
2. Step 2: Convert to fraction form
   2,245.35/3,369.55 = 784.50/x
3. Step 3: Cross multiply
   2,245.35x = 3,369.55 × 784.50
4. Step 4: Simplify right side
   2,245.35x = 2,643,411.98
5. Step 5: Solve for x
   x = 2,643,411.98/2,245.35
6. Step 6: Final answer
   x = 1,177.28