Finding the Fourth Proportional to 1,227.79, 1,695.00 and 947.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,227.79 : 1,695.00 = 947.42 : x
2. Step 2: Convert to fraction form
   1,227.79/1,695.00 = 947.42/x
3. Step 3: Cross multiply
   1,227.79x = 1,695.00 × 947.42
4. Step 4: Simplify right side
   1,227.79x = 1,605,873.35
5. Step 5: Solve for x
   x = 1,605,873.35/1,227.79
6. Step 6: Final answer
   x = 1,307.94