Finding the Fourth Proportional to 1,293.51, 1,941.23 and 947.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,293.51 : 1,941.23 = 947.72 : x
2. Step 2: Convert to fraction form
   1,293.51/1,941.23 = 947.72/x
3. Step 3: Cross multiply
   1,293.51x = 1,941.23 × 947.72
4. Step 4: Simplify right side
   1,293.51x = 1,839,749.72
5. Step 5: Solve for x
   x = 1,839,749.72/1,293.51
6. Step 6: Final answer
   x = 1,422.29