Finding the Fourth Proportional to 1,398.77, 1,928.00 and 1,162.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398.77 : 1,928.00 = 1,162.25 : x
2. Step 2: Convert to fraction form
   1,398.77/1,928.00 = 1,162.25/x
3. Step 3: Cross multiply
   1,398.77x = 1,928.00 × 1,162.25
4. Step 4: Simplify right side
   1,398.77x = 2,240,818.50
5. Step 5: Solve for x
   x = 2,240,818.50/1,398.77
6. Step 6: Final answer
   x = 1,601.99