Finding the Fourth Proportional to 1,615.58, 2,424.46 and 1,038.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.58 : 2,424.46 = 1,038.86 : x
2. Step 2: Convert to fraction form
   1,615.58/2,424.46 = 1,038.86/x
3. Step 3: Cross multiply
   1,615.58x = 2,424.46 × 1,038.86
4. Step 4: Simplify right side
   1,615.58x = 2,518,674.52
5. Step 5: Solve for x
   x = 2,518,674.52/1,615.58
6. Step 6: Final answer
   x = 1,558.99