Finding the Fourth Proportional to 1,341.78, 1,851.68 and 875.76

Step by Step Solution

1. Step 1: Write the proportion equation
   1,341.78 : 1,851.68 = 875.76 : x
2. Step 2: Convert to fraction form
   1,341.78/1,851.68 = 875.76/x
3. Step 3: Cross multiply
   1,341.78x = 1,851.68 × 875.76
4. Step 4: Simplify right side
   1,341.78x = 1,621,627.28
5. Step 5: Solve for x
   x = 1,621,627.28/1,341.78
6. Step 6: Final answer
   x = 1,208.56