Finding the Fourth Proportional to 1,081.02, 1,490.64 and 976.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,081.02 : 1,490.64 = 976.08 : x
2. Step 2: Convert to fraction form
   1,081.02/1,490.64 = 976.08/x
3. Step 3: Cross multiply
   1,081.02x = 1,490.64 × 976.08
4. Step 4: Simplify right side
   1,081.02x = 1,454,983.89
5. Step 5: Solve for x
   x = 1,454,983.89/1,081.02
6. Step 6: Final answer
   x = 1,345.94