Finding the Fourth Proportional to 2,081.60, 2,873.98 and 1,335.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,081.60 : 2,873.98 = 1,335.89 : x
2. Step 2: Convert to fraction form
   2,081.60/2,873.98 = 1,335.89/x
3. Step 3: Cross multiply
   2,081.60x = 2,873.98 × 1,335.89
4. Step 4: Simplify right side
   2,081.60x = 3,839,321.14
5. Step 5: Solve for x
   x = 3,839,321.14/2,081.60
6. Step 6: Final answer
   x = 1,844.41