Finding the Fourth Proportional to 2,300.12, 3,155.06 and 2,280.35

Step by Step Solution

1. Step 1: Write the proportion equation
   2,300.12 : 3,155.06 = 2,280.35 : x
2. Step 2: Convert to fraction form
   2,300.12/3,155.06 = 2,280.35/x
3. Step 3: Cross multiply
   2,300.12x = 3,155.06 × 2,280.35
4. Step 4: Simplify right side
   2,300.12x = 7,194,641.07
5. Step 5: Solve for x
   x = 7,194,641.07/2,300.12
6. Step 6: Final answer
   x = 3,127.94