Finding the Fourth Proportional to 1,599.32, 2,206.82 and 891.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,599.32 : 2,206.82 = 891.10 : x
2. Step 2: Convert to fraction form
   1,599.32/2,206.82 = 891.10/x
3. Step 3: Cross multiply
   1,599.32x = 2,206.82 × 891.10
4. Step 4: Simplify right side
   1,599.32x = 1,966,499.78
5. Step 5: Solve for x
   x = 1,966,499.78/1,599.32
6. Step 6: Final answer
   x = 1,229.59