Finding the Fourth Proportional to 2,345.25, 3,518.55 and 785.37

Step by Step Solution

1. Step 1: Write the proportion equation
   2,345.25 : 3,518.55 = 785.37 : x
2. Step 2: Convert to fraction form
   2,345.25/3,518.55 = 785.37/x
3. Step 3: Cross multiply
   2,345.25x = 3,518.55 × 785.37
4. Step 4: Simplify right side
   2,345.25x = 2,763,363.61
5. Step 5: Solve for x
   x = 2,763,363.61/2,345.25
6. Step 6: Final answer
   x = 1,178.28