Finding the Fourth Proportional to 3,760.61, 5,643.05 and 1,911.83

Step by Step Solution

1. Step 1: Write the proportion equation
   3,760.61 : 5,643.05 = 1,911.83 : x
2. Step 2: Convert to fraction form
   3,760.61/5,643.05 = 1,911.83/x
3. Step 3: Cross multiply
   3,760.61x = 5,643.05 × 1,911.83
4. Step 4: Simplify right side
   3,760.61x = 10,788,514.51
5. Step 5: Solve for x
   x = 10,788,514.51/3,760.61
6. Step 6: Final answer
   x = 2,868.82