Finding the Fourth Proportional to 3,513.78, 5,272.29 and 1,783.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,513.78 : 5,272.29 = 1,783.62 : x
2. Step 2: Convert to fraction form
   3,513.78/5,272.29 = 1,783.62/x
3. Step 3: Cross multiply
   3,513.78x = 5,272.29 × 1,783.62
4. Step 4: Simplify right side
   3,513.78x = 9,403,761.89
5. Step 5: Solve for x
   x = 9,403,761.89/3,513.78
6. Step 6: Final answer
   x = 2,676.25