Finding the Fourth Proportional to 1,346.57, 1,858.77 and 880.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,346.57 : 1,858.77 = 880.82 : x
2. Step 2: Convert to fraction form
   1,346.57/1,858.77 = 880.82/x
3. Step 3: Cross multiply
   1,346.57x = 1,858.77 × 880.82
4. Step 4: Simplify right side
   1,346.57x = 1,637,241.79
5. Step 5: Solve for x
   x = 1,637,241.79/1,346.57
6. Step 6: Final answer
   x = 1,215.86