Finding the Fourth Proportional to 2,742.89, 4,113.20 and 1,054.02

Step by Step Solution

1. Step 1: Write the proportion equation
   2,742.89 : 4,113.20 = 1,054.02 : x
2. Step 2: Convert to fraction form
   2,742.89/4,113.20 = 1,054.02/x
3. Step 3: Cross multiply
   2,742.89x = 4,113.20 × 1,054.02
4. Step 4: Simplify right side
   2,742.89x = 4,335,389.79
5. Step 5: Solve for x
   x = 4,335,389.79/2,742.89
6. Step 6: Final answer
   x = 1,580.59