Finding the Fourth Proportional to 1,783.98, 2,463.30 and 1,392.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,783.98 : 2,463.30 = 1,392.12 : x
2. Step 2: Convert to fraction form
   1,783.98/2,463.30 = 1,392.12/x
3. Step 3: Cross multiply
   1,783.98x = 2,463.30 × 1,392.12
4. Step 4: Simplify right side
   1,783.98x = 3,429,209.20
5. Step 5: Solve for x
   x = 3,429,209.20/1,783.98
6. Step 6: Final answer
   x = 1,922.22