Finding the Fourth Proportional to 3,663.91, 5,055.78 and 2,070.37

Step by Step Solution

1. Step 1: Write the proportion equation
   3,663.91 : 5,055.78 = 2,070.37 : x
2. Step 2: Convert to fraction form
   3,663.91/5,055.78 = 2,070.37/x
3. Step 3: Cross multiply
   3,663.91x = 5,055.78 × 2,070.37
4. Step 4: Simplify right side
   3,663.91x = 10,467,335.24
5. Step 5: Solve for x
   x = 10,467,335.24/3,663.91
6. Step 6: Final answer
   x = 2,856.88