Finding the Fourth Proportional to 1,388.00, 2,082.74 and 926.03

Step by Step Solution

1. Step 1: Write the proportion equation
   1,388.00 : 2,082.74 = 926.03 : x
2. Step 2: Convert to fraction form
   1,388.00/2,082.74 = 926.03/x
3. Step 3: Cross multiply
   1,388.00x = 2,082.74 × 926.03
4. Step 4: Simplify right side
   1,388.00x = 1,928,664.68
5. Step 5: Solve for x
   x = 1,928,664.68/1,388.00
6. Step 6: Final answer
   x = 1,389.53