Finding the Fourth Proportional to 1,892.43, 2,611.50 and 1,053.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,892.43 : 2,611.50 = 1,053.12 : x
2. Step 2: Convert to fraction form
   1,892.43/2,611.50 = 1,053.12/x
3. Step 3: Cross multiply
   1,892.43x = 2,611.50 × 1,053.12
4. Step 4: Simplify right side
   1,892.43x = 2,750,222.88
5. Step 5: Solve for x
   x = 2,750,222.88/1,892.43
6. Step 6: Final answer
   x = 1,453.28