Finding the Fourth Proportional to 1,269.52, 1,903.94 and 538.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,269.52 : 1,903.94 = 538.72 : x
2. Step 2: Convert to fraction form
   1,269.52/1,903.94 = 538.72/x
3. Step 3: Cross multiply
   1,269.52x = 1,903.94 × 538.72
4. Step 4: Simplify right side
   1,269.52x = 1,025,690.56
5. Step 5: Solve for x
   x = 1,025,690.56/1,269.52
6. Step 6: Final answer
   x = 807.94