Finding the Fourth Proportional to 4,776.96, 7,166.16 and 1,490.31

Step by Step Solution

1. Step 1: Write the proportion equation
   4,776.96 : 7,166.16 = 1,490.31 : x
2. Step 2: Convert to fraction form
   4,776.96/7,166.16 = 1,490.31/x
3. Step 3: Cross multiply
   4,776.96x = 7,166.16 × 1,490.31
4. Step 4: Simplify right side
   4,776.96x = 10,679,799.91
5. Step 5: Solve for x
   x = 10,679,799.91/4,776.96
6. Step 6: Final answer
   x = 2,235.69