Finding the Fourth Proportional to 1,268.04, 1,899.50 and 992.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,268.04 : 1,899.50 = 992.82 : x
2. Step 2: Convert to fraction form
   1,268.04/1,899.50 = 992.82/x
3. Step 3: Cross multiply
   1,268.04x = 1,899.50 × 992.82
4. Step 4: Simplify right side
   1,268.04x = 1,885,856.63
5. Step 5: Solve for x
   x = 1,885,856.63/1,268.04
6. Step 6: Final answer
   x = 1,487.22