Finding the Fourth Proportional to 3,191.42, 4,789.29 and 1,111.44

Step by Step Solution

1. Step 1: Write the proportion equation
   3,191.42 : 4,789.29 = 1,111.44 : x
2. Step 2: Convert to fraction form
   3,191.42/4,789.29 = 1,111.44/x
3. Step 3: Cross multiply
   3,191.42x = 4,789.29 × 1,111.44
4. Step 4: Simplify right side
   3,191.42x = 5,323,030.61
5. Step 5: Solve for x
   x = 5,323,030.61/3,191.42
6. Step 6: Final answer
   x = 1,667.92