Finding the Fourth Proportional to 1,353.21, 2,019.56 and 1,262.99

Step by Step Solution

1. Step 1: Write the proportion equation
   1,353.21 : 2,019.56 = 1,262.99 : x
2. Step 2: Convert to fraction form
   1,353.21/2,019.56 = 1,262.99/x
3. Step 3: Cross multiply
   1,353.21x = 2,019.56 × 1,262.99
4. Step 4: Simplify right side
   1,353.21x = 2,550,686.37
5. Step 5: Solve for x
   x = 2,550,686.37/1,353.21
6. Step 6: Final answer
   x = 1,884.92