Finding the Fourth Proportional to 1,851.39, 2,554.77 and 1,054.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.39 : 2,554.77 = 1,054.72 : x
2. Step 2: Convert to fraction form
   1,851.39/2,554.77 = 1,054.72/x
3. Step 3: Cross multiply
   1,851.39x = 2,554.77 × 1,054.72
4. Step 4: Simplify right side
   1,851.39x = 2,694,574.16
5. Step 5: Solve for x
   x = 2,694,574.16/1,851.39
6. Step 6: Final answer
   x = 1,455.43