Finding the Fourth Proportional to 1,615.83, 2,419.39 and 844.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,615.83 : 2,419.39 = 844.71 : x
2. Step 2: Convert to fraction form
   1,615.83/2,419.39 = 844.71/x
3. Step 3: Cross multiply
   1,615.83x = 2,419.39 × 844.71
4. Step 4: Simplify right side
   1,615.83x = 2,043,682.93
5. Step 5: Solve for x
   x = 2,043,682.93/1,615.83
6. Step 6: Final answer
   x = 1,264.79