Finding the Fourth Proportional to 2,460.16, 3,691.34 and 1,289.89

Step by Step Solution

1. Step 1: Write the proportion equation
   2,460.16 : 3,691.34 = 1,289.89 : x
2. Step 2: Convert to fraction form
   2,460.16/3,691.34 = 1,289.89/x
3. Step 3: Cross multiply
   2,460.16x = 3,691.34 × 1,289.89
4. Step 4: Simplify right side
   2,460.16x = 4,761,422.55
5. Step 5: Solve for x
   x = 4,761,422.55/2,460.16
6. Step 6: Final answer
   x = 1,935.41