Finding the Fourth Proportional to 2,599.98, 3,901.56 and 1,284.57

Step by Step Solution

1. Step 1: Write the proportion equation
   2,599.98 : 3,901.56 = 1,284.57 : x
2. Step 2: Convert to fraction form
   2,599.98/3,901.56 = 1,284.57/x
3. Step 3: Cross multiply
   2,599.98x = 3,901.56 × 1,284.57
4. Step 4: Simplify right side
   2,599.98x = 5,011,826.93
5. Step 5: Solve for x
   x = 5,011,826.93/2,599.98
6. Step 6: Final answer
   x = 1,927.64