Finding the Fourth Proportional to 1,885.33, 2,827.54 and 789.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,885.33 : 2,827.54 = 789.72 : x
2. Step 2: Convert to fraction form
   1,885.33/2,827.54 = 789.72/x
3. Step 3: Cross multiply
   1,885.33x = 2,827.54 × 789.72
4. Step 4: Simplify right side
   1,885.33x = 2,232,964.89
5. Step 5: Solve for x
   x = 2,232,964.89/1,885.33
6. Step 6: Final answer
   x = 1,184.39