Finding the Fourth Proportional to 1,892.72, 2,611.96 and 1,064.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.72 : 2,611.96 = 1,064.72 : x
2. Step 2: Convert to fraction form
   1,892.72/2,611.96 = 1,064.72/x
3. Step 3: Cross multiply
   1,892.72x = 2,611.96 × 1,064.72
4. Step 4: Simplify right side
   1,892.72x = 2,781,009.92
5. Step 5: Solve for x
   x = 2,781,009.92/1,892.72
6. Step 6: Final answer
   x = 1,469.32