Finding the Fourth Proportional to 1,850.72, 2,553.88 and 1,011.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,850.72 : 2,553.88 = 1,011.25 : x
2. Step 2: Convert to fraction form
   1,850.72/2,553.88 = 1,011.25/x
3. Step 3: Cross multiply
   1,850.72x = 2,553.88 × 1,011.25
4. Step 4: Simplify right side
   1,850.72x = 2,582,611.15
5. Step 5: Solve for x
   x = 2,582,611.15/1,850.72
6. Step 6: Final answer
   x = 1,395.46