Finding the Fourth Proportional to 2,953.49, 4,395.36 and 2,855.06

Step by Step Solution

1. Step 1: Write the proportion equation
   2,953.49 : 4,395.36 = 2,855.06 : x
2. Step 2: Convert to fraction form
   2,953.49/4,395.36 = 2,855.06/x
3. Step 3: Cross multiply
   2,953.49x = 4,395.36 × 2,855.06
4. Step 4: Simplify right side
   2,953.49x = 12,549,005.25
5. Step 5: Solve for x
   x = 12,549,005.25/2,953.49
6. Step 6: Final answer
   x = 4,248.88