Finding the Fourth Proportional to 2,219.15, 3,321.54 and 1,634.03

Step by Step Solution

1. Step 1: Write the proportion equation
   2,219.15 : 3,321.54 = 1,634.03 : x
2. Step 2: Convert to fraction form
   2,219.15/3,321.54 = 1,634.03/x
3. Step 3: Cross multiply
   2,219.15x = 3,321.54 × 1,634.03
4. Step 4: Simplify right side
   2,219.15x = 5,427,496.01
5. Step 5: Solve for x
   x = 5,427,496.01/2,219.15
6. Step 6: Final answer
   x = 2,445.75