Finding the Fourth Proportional to 1,850.86, 2,554.17 and 1,011.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,850.86 : 2,554.17 = 1,011.57 : x
2. Step 2: Convert to fraction form
   1,850.86/2,554.17 = 1,011.57/x
3. Step 3: Cross multiply
   1,850.86x = 2,554.17 × 1,011.57
4. Step 4: Simplify right side
   1,850.86x = 2,583,728.43
5. Step 5: Solve for x
   x = 2,583,728.43/1,850.86
6. Step 6: Final answer
   x = 1,395.96