Finding the Fourth Proportional to 1,894.47, 2,615.13 and 1,231.89

Step by Step Solution

1. Step 1: Write the proportion equation
   1,894.47 : 2,615.13 = 1,231.89 : x
2. Step 2: Convert to fraction form
   1,894.47/2,615.13 = 1,231.89/x
3. Step 3: Cross multiply
   1,894.47x = 2,615.13 × 1,231.89
4. Step 4: Simplify right side
   1,894.47x = 3,221,552.50
5. Step 5: Solve for x
   x = 3,221,552.50/1,894.47
6. Step 6: Final answer
   x = 1,700.50