Finding the Fourth Proportional to 1,356.72, 2,033.64 and 1,284.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,356.72 : 2,033.64 = 1,284.72 : x
2. Step 2: Convert to fraction form
   1,356.72/2,033.64 = 1,284.72/x
3. Step 3: Cross multiply
   1,356.72x = 2,033.64 × 1,284.72
4. Step 4: Simplify right side
   1,356.72x = 2,612,657.98
5. Step 5: Solve for x
   x = 2,612,657.98/1,356.72
6. Step 6: Final answer
   x = 1,925.72