Finding the Fourth Proportional to 1,840.83, 2,540.28 and 1,054.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,840.83 : 2,540.28 = 1,054.72 : x
2. Step 2: Convert to fraction form
   1,840.83/2,540.28 = 1,054.72/x
3. Step 3: Cross multiply
   1,840.83x = 2,540.28 × 1,054.72
4. Step 4: Simplify right side
   1,840.83x = 2,679,284.12
5. Step 5: Solve for x
   x = 2,679,284.12/1,840.83
6. Step 6: Final answer
   x = 1,455.48