Finding the Fourth Proportional to 1,921.48, 2,880.72 and 882.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,921.48 : 2,880.72 = 882.16 : x
2. Step 2: Convert to fraction form
   1,921.48/2,880.72 = 882.16/x
3. Step 3: Cross multiply
   1,921.48x = 2,880.72 × 882.16
4. Step 4: Simplify right side
   1,921.48x = 2,541,255.96
5. Step 5: Solve for x
   x = 2,541,255.96/1,921.48
6. Step 6: Final answer
   x = 1,322.55