Finding the Fourth Proportional to 1,490.50, 2,055.48 and 992.28

Step by Step Solution

1. Step 1: Write the proportion equation
   1,490.50 : 2,055.48 = 992.28 : x
2. Step 2: Convert to fraction form
   1,490.50/2,055.48 = 992.28/x
3. Step 3: Cross multiply
   1,490.50x = 2,055.48 × 992.28
4. Step 4: Simplify right side
   1,490.50x = 2,039,611.69
5. Step 5: Solve for x
   x = 2,039,611.69/1,490.50
6. Step 6: Final answer
   x = 1,368.41