Finding the Fourth Proportional to 1,613.39, 2,422.96 and 1,321.45

Step by Step Solution

1. Step 1: Write the proportion equation
   1,613.39 : 2,422.96 = 1,321.45 : x
2. Step 2: Convert to fraction form
   1,613.39/2,422.96 = 1,321.45/x
3. Step 3: Cross multiply
   1,613.39x = 2,422.96 × 1,321.45
4. Step 4: Simplify right side
   1,613.39x = 3,201,820.49
5. Step 5: Solve for x
   x = 3,201,820.49/1,613.39
6. Step 6: Final answer
   x = 1,984.53