Finding the Fourth Proportional to 3,191.98, 4,787.68 and 1,111.62

Step by Step Solution

1. Step 1: Write the proportion equation
   3,191.98 : 4,787.68 = 1,111.62 : x
2. Step 2: Convert to fraction form
   3,191.98/4,787.68 = 1,111.62/x
3. Step 3: Cross multiply
   3,191.98x = 4,787.68 × 1,111.62
4. Step 4: Simplify right side
   3,191.98x = 5,322,080.84
5. Step 5: Solve for x
   x = 5,322,080.84/3,191.98
6. Step 6: Final answer
   x = 1,667.33