Finding the Fourth Proportional to 1,917.82, 2,875.27 and 992.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,917.82 : 2,875.27 = 992.79 : x
2. Step 2: Convert to fraction form
   1,917.82/2,875.27 = 992.79/x
3. Step 3: Cross multiply
   1,917.82x = 2,875.27 × 992.79
4. Step 4: Simplify right side
   1,917.82x = 2,854,539.30
5. Step 5: Solve for x
   x = 2,854,539.30/1,917.82
6. Step 6: Final answer
   x = 1,488.43