Finding the Fourth Proportional to 1,615.30, 2,216.29 and 1,573.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.30 : 2,216.29 = 1,573.84 : x
2. Step 2: Convert to fraction form
   1,615.30/2,216.29 = 1,573.84/x
3. Step 3: Cross multiply
   1,615.30x = 2,216.29 × 1,573.84
4. Step 4: Simplify right side
   1,615.30x = 3,488,089.79
5. Step 5: Solve for x
   x = 3,488,089.79/1,615.30
6. Step 6: Final answer
   x = 2,159.41