Finding the Fourth Proportional to 3,705.89, 5,113.68 and 2,111.96

Step by Step Solution

1. Step 1: Write the proportion equation
   3,705.89 : 5,113.68 = 2,111.96 : x
2. Step 2: Convert to fraction form
   3,705.89/5,113.68 = 2,111.96/x
3. Step 3: Cross multiply
   3,705.89x = 5,113.68 × 2,111.96
4. Step 4: Simplify right side
   3,705.89x = 10,799,887.61
5. Step 5: Solve for x
   x = 10,799,887.61/3,705.89
6. Step 6: Final answer
   x = 2,914.25