Finding the Fourth Proportional to 1,402.48, 2,104.06 and 992.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,402.48 : 2,104.06 = 992.42 : x
2. Step 2: Convert to fraction form
   1,402.48/2,104.06 = 992.42/x
3. Step 3: Cross multiply
   1,402.48x = 2,104.06 × 992.42
4. Step 4: Simplify right side
   1,402.48x = 2,088,111.23
5. Step 5: Solve for x
   x = 2,088,111.23/1,402.48
6. Step 6: Final answer
   x = 1,488.87