Finding the Fourth Proportional to 1,851.45, 2,554.72 and 1,054.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.45 : 2,554.72 = 1,054.81 : x
2. Step 2: Convert to fraction form
   1,851.45/2,554.72 = 1,054.81/x
3. Step 3: Cross multiply
   1,851.45x = 2,554.72 × 1,054.81
4. Step 4: Simplify right side
   1,851.45x = 2,694,744.20
5. Step 5: Solve for x
   x = 2,694,744.20/1,851.45
6. Step 6: Final answer
   x = 1,455.48