Finding the Fourth Proportional to 2,152.64, 3,227.76 and 1,054.64

Step by Step Solution

1. Step 1: Write the proportion equation
   2,152.64 : 3,227.76 = 1,054.64 : x
2. Step 2: Convert to fraction form
   2,152.64/3,227.76 = 1,054.64/x
3. Step 3: Cross multiply
   2,152.64x = 3,227.76 × 1,054.64
4. Step 4: Simplify right side
   2,152.64x = 3,404,124.81
5. Step 5: Solve for x
   x = 3,404,124.81/2,152.64
6. Step 6: Final answer
   x = 1,581.37