Finding the Fourth Proportional to 3,856.45, 5,321.89 and 2,088.06

Step by Step Solution

1. Step 1: Write the proportion equation
   3,856.45 : 5,321.89 = 2,088.06 : x
2. Step 2: Convert to fraction form
   3,856.45/5,321.89 = 2,088.06/x
3. Step 3: Cross multiply
   3,856.45x = 5,321.89 × 2,088.06
4. Step 4: Simplify right side
   3,856.45x = 11,112,425.63
5. Step 5: Solve for x
   x = 11,112,425.63/3,856.45
6. Step 6: Final answer
   x = 2,881.52