Finding the Fourth Proportional to 1,340.64, 1,851.12 and 875.52

Step by Step Solution

1. Step 1: Write the proportion equation
   1,340.64 : 1,851.12 = 875.52 : x
2. Step 2: Convert to fraction form
   1,340.64/1,851.12 = 875.52/x
3. Step 3: Cross multiply
   1,340.64x = 1,851.12 × 875.52
4. Step 4: Simplify right side
   1,340.64x = 1,620,692.58
5. Step 5: Solve for x
   x = 1,620,692.58/1,340.64
6. Step 6: Final answer
   x = 1,208.89