Finding the Fourth Proportional to 1,055.07, 1,580.58 and 882.81

Step by Step Solution

1. Step 1: Write the proportion equation
   1,055.07 : 1,580.58 = 882.81 : x
2. Step 2: Convert to fraction form
   1,055.07/1,580.58 = 882.81/x
3. Step 3: Cross multiply
   1,055.07x = 1,580.58 × 882.81
4. Step 4: Simplify right side
   1,055.07x = 1,395,351.83
5. Step 5: Solve for x
   x = 1,395,351.83/1,055.07
6. Step 6: Final answer
   x = 1,322.52