Finding the Fourth Proportional to 1,945.18, 2,916.91 and 712.27

Step by Step Solution

1. Step 1: Write the proportion equation
   1,945.18 : 2,916.91 = 712.27 : x
2. Step 2: Convert to fraction form
   1,945.18/2,916.91 = 712.27/x
3. Step 3: Cross multiply
   1,945.18x = 2,916.91 × 712.27
4. Step 4: Simplify right side
   1,945.18x = 2,077,609.34
5. Step 5: Solve for x
   x = 2,077,609.34/1,945.18
6. Step 6: Final answer
   x = 1,068.08