Finding the Fourth Proportional to 2,810.95, 4,213.72 and 1,055.48

Step by Step Solution

1. Step 1: Write the proportion equation
   2,810.95 : 4,213.72 = 1,055.48 : x
2. Step 2: Convert to fraction form
   2,810.95/4,213.72 = 1,055.48/x
3. Step 3: Cross multiply
   2,810.95x = 4,213.72 × 1,055.48
4. Step 4: Simplify right side
   2,810.95x = 4,447,501.14
5. Step 5: Solve for x
   x = 4,447,501.14/2,810.95
6. Step 6: Final answer
   x = 1,582.20