Finding the Fourth Proportional to 3,488.96, 5,233.43 and 891.89

Step by Step Solution

1. Step 1: Write the proportion equation
   3,488.96 : 5,233.43 = 891.89 : x
2. Step 2: Convert to fraction form
   3,488.96/5,233.43 = 891.89/x
3. Step 3: Cross multiply
   3,488.96x = 5,233.43 × 891.89
4. Step 4: Simplify right side
   3,488.96x = 4,667,643.88
5. Step 5: Solve for x
   x = 4,667,643.88/3,488.96
6. Step 6: Final answer
   x = 1,337.83