Finding the Fourth Proportional to 2,345.15, 3,518.03 and 784.49

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.15 : 3,518.03 = 784.49 : x
2. Step 2: Convert to fraction form
   2,345.15/3,518.03 = 784.49/x
3. Step 3: Cross multiply
   2,345.15x = 3,518.03 × 784.49
4. Step 4: Simplify right side
   2,345.15x = 2,759,843.73
5. Step 5: Solve for x
   x = 2,759,843.73/2,345.15
6. Step 6: Final answer
   x = 1,176.83