Finding the Fourth Proportional to 1,778.81, 2,454.71 and 992.84

Step by Step Solution

1. Step 1: Write the proportion equation
   1,778.81 : 2,454.71 = 992.84 : x
2. Step 2: Convert to fraction form
   1,778.81/2,454.71 = 992.84/x
3. Step 3: Cross multiply
   1,778.81x = 2,454.71 × 992.84
4. Step 4: Simplify right side
   1,778.81x = 2,437,117.04
5. Step 5: Solve for x
   x = 2,437,117.04/1,778.81
6. Step 6: Final answer
   x = 1,370.09