Finding the Fourth Proportional to 3,890.69, 5,836.37 and 1,117.59

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.69 : 5,836.37 = 1,117.59 : x
2. Step 2: Convert to fraction form
   3,890.69/5,836.37 = 1,117.59/x
3. Step 3: Cross multiply
   3,890.69x = 5,836.37 × 1,117.59
4. Step 4: Simplify right side
   3,890.69x = 6,522,663.16
5. Step 5: Solve for x
   x = 6,522,663.16/3,890.69
6. Step 6: Final answer
   x = 1,676.48