Finding the Fourth Proportional to 3,887.84, 5,829.33 and 1,290.17

Step by Step Solution

1. Step 1: Write the proportion equation
   3,887.84 : 5,829.33 = 1,290.17 : x
2. Step 2: Convert to fraction form
   3,887.84/5,829.33 = 1,290.17/x
3. Step 3: Cross multiply
   3,887.84x = 5,829.33 × 1,290.17
4. Step 4: Simplify right side
   3,887.84x = 7,520,826.69
5. Step 5: Solve for x
   x = 7,520,826.69/3,887.84
6. Step 6: Final answer
   x = 1,934.45