Finding the Fourth Proportional to 1,927.79, 2,659.27 and 1,219.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,927.79 : 2,659.27 = 1,219.42 : x
2. Step 2: Convert to fraction form
   1,927.79/2,659.27 = 1,219.42/x
3. Step 3: Cross multiply
   1,927.79x = 2,659.27 × 1,219.42
4. Step 4: Simplify right side
   1,927.79x = 3,242,767.02
5. Step 5: Solve for x
   x = 3,242,767.02/1,927.79
6. Step 6: Final answer
   x = 1,682.12