Finding the Fourth Proportional to 1,615.95, 2,406.71 and 1,558.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.95 : 2,406.71 = 1,558.54 : x
2. Step 2: Convert to fraction form
   1,615.95/2,406.71 = 1,558.54/x
3. Step 3: Cross multiply
   1,615.95x = 2,406.71 × 1,558.54
4. Step 4: Simplify right side
   1,615.95x = 3,750,960.71
5. Step 5: Solve for x
   x = 3,750,960.71/1,615.95
6. Step 6: Final answer
   x = 2,321.21