Finding the Fourth Proportional to 2,305.10, 3,455.98 and 918.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,305.10 : 3,455.98 = 918.02 : x
2. Step 2: Convert to fraction form
   2,305.10/3,455.98 = 918.02/x
3. Step 3: Cross multiply
   2,305.10x = 3,455.98 × 918.02
4. Step 4: Simplify right side
   2,305.10x = 3,172,665.10
5. Step 5: Solve for x
   x = 3,172,665.10/2,305.10
6. Step 6: Final answer
   x = 1,376.37