Finding the Fourth Proportional to 1,146.83, 1,721.01 and 992.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,146.83 : 1,721.01 = 992.53 : x
2. Step 2: Convert to fraction form
   1,146.83/1,721.01 = 992.53/x
3. Step 3: Cross multiply
   1,146.83x = 1,721.01 × 992.53
4. Step 4: Simplify right side
   1,146.83x = 1,708,145.45
5. Step 5: Solve for x
   x = 1,708,145.45/1,146.83
6. Step 6: Final answer
   x = 1,489.45