Finding the Fourth Proportional to 1,733.72, 2,392.43 and 987.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,733.72 : 2,392.43 = 987.57 : x
2. Step 2: Convert to fraction form
   1,733.72/2,392.43 = 987.57/x
3. Step 3: Cross multiply
   1,733.72x = 2,392.43 × 987.57
4. Step 4: Simplify right side
   1,733.72x = 2,362,687.16
5. Step 5: Solve for x
   x = 2,362,687.16/1,733.72
6. Step 6: Final answer
   x = 1,362.79