Finding the Fourth Proportional to 1,285.27, 1,926.18 and 790.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,285.27 : 1,926.18 = 790.12 : x
2. Step 2: Convert to fraction form
   1,285.27/1,926.18 = 790.12/x
3. Step 3: Cross multiply
   1,285.27x = 1,926.18 × 790.12
4. Step 4: Simplify right side
   1,285.27x = 1,521,913.34
5. Step 5: Solve for x
   x = 1,521,913.34/1,285.27
6. Step 6: Final answer
   x = 1,184.12