Finding the Fourth Proportional to 3,890.69, 5,835.32 and 1,292.93

Step by Step Solution

1. Step 1: Write the proportion equation
   3,890.69 : 5,835.32 = 1,292.93 : x
2. Step 2: Convert to fraction form
   3,890.69/5,835.32 = 1,292.93/x
3. Step 3: Cross multiply
   3,890.69x = 5,835.32 × 1,292.93
4. Step 4: Simplify right side
   3,890.69x = 7,544,653.82
5. Step 5: Solve for x
   x = 7,544,653.82/3,890.69
6. Step 6: Final answer
   x = 1,939.16