Finding the Fourth Proportional to 1,857.96, 2,784.78 and 992.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,857.96 : 2,784.78 = 992.04 : x
2. Step 2: Convert to fraction form
   1,857.96/2,784.78 = 992.04/x
3. Step 3: Cross multiply
   1,857.96x = 2,784.78 × 992.04
4. Step 4: Simplify right side
   1,857.96x = 2,762,613.15
5. Step 5: Solve for x
   x = 2,762,613.15/1,857.96
6. Step 6: Final answer
   x = 1,486.91