Finding the Fourth Proportional to 3,648.30, 5,471.37 and 1,915.98

Step by Step Solution

1. Step 1: Write the proportion equation
   3,648.30 : 5,471.37 = 1,915.98 : x
2. Step 2: Convert to fraction form
   3,648.30/5,471.37 = 1,915.98/x
3. Step 3: Cross multiply
   3,648.30x = 5,471.37 × 1,915.98
4. Step 4: Simplify right side
   3,648.30x = 10,483,035.49
5. Step 5: Solve for x
   x = 10,483,035.49/3,648.30
6. Step 6: Final answer
   x = 2,873.40