Finding the Fourth Proportional to 2,652.50, 3,978.10 and 897.47

Step by Step Solution

1. Step 1: Write the proportion equation
   2,652.50 : 3,978.10 = 897.47 : x
2. Step 2: Convert to fraction form
   2,652.50/3,978.10 = 897.47/x
3. Step 3: Cross multiply
   2,652.50x = 3,978.10 × 897.47
4. Step 4: Simplify right side
   2,652.50x = 3,570,201.03
5. Step 5: Solve for x
   x = 3,570,201.03/2,652.50
6. Step 6: Final answer
   x = 1,345.98