Finding the Fourth Proportional to 3,890.28, 5,834.47 and 1,116.30

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.28 : 5,834.47 = 1,116.30 : x
2. Step 2: Convert to fraction form
   3,890.28/5,834.47 = 1,116.30/x
3. Step 3: Cross multiply
   3,890.28x = 5,834.47 × 1,116.30
4. Step 4: Simplify right side
   3,890.28x = 6,513,018.86
5. Step 5: Solve for x
   x = 6,513,018.86/3,890.28
6. Step 6: Final answer
   x = 1,674.18