Finding the Fourth Proportional to 3,872.89, 5,345.05 and 2,300.99

Step by Step Solution

1. Step 1: Write the proportion equation
   3,872.89 : 5,345.05 = 2,300.99 : x
2. Step 2: Convert to fraction form
   3,872.89/5,345.05 = 2,300.99/x
3. Step 3: Cross multiply
   3,872.89x = 5,345.05 × 2,300.99
4. Step 4: Simplify right side
   3,872.89x = 12,298,887.48
5. Step 5: Solve for x
   x = 12,298,887.48/3,872.89
6. Step 6: Final answer
   x = 3,175.63