Finding the Fourth Proportional to 1,191.83, 1,646.98 and 896.58

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191.83 : 1,646.98 = 896.58 : x
2. Step 2: Convert to fraction form
   1,191.83/1,646.98 = 896.58/x
3. Step 3: Cross multiply
   1,191.83x = 1,646.98 × 896.58
4. Step 4: Simplify right side
   1,191.83x = 1,476,647.09
5. Step 5: Solve for x
   x = 1,476,647.09/1,191.83
6. Step 6: Final answer
   x = 1,238.98