Finding the Fourth Proportional to 1,851.52, 2,776.56 and 877.12

Step by Step Solution

1. Step 1: Write the proportion equation
   1,851.52 : 2,776.56 = 877.12 : x
2. Step 2: Convert to fraction form
   1,851.52/2,776.56 = 877.12/x
3. Step 3: Cross multiply
   1,851.52x = 2,776.56 × 877.12
4. Step 4: Simplify right side
   1,851.52x = 2,435,376.31
5. Step 5: Solve for x
   x = 2,435,376.31/1,851.52
6. Step 6: Final answer
   x = 1,315.34