Finding the Fourth Proportional to 2,322.78, 3,485.30 and 1,152.90

Step by Step Solution

1. Step 1: Write the proportion equation
   2,322.78 : 3,485.30 = 1,152.90 : x
2. Step 2: Convert to fraction form
   2,322.78/3,485.30 = 1,152.90/x
3. Step 3: Cross multiply
   2,322.78x = 3,485.30 × 1,152.90
4. Step 4: Simplify right side
   2,322.78x = 4,018,202.37
5. Step 5: Solve for x
   x = 4,018,202.37/2,322.78
6. Step 6: Final answer
   x = 1,729.91