Finding the Fourth Proportional to 1,377.59, 1,901.36 and 880.14

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.59 : 1,901.36 = 880.14 : x
2. Step 2: Convert to fraction form
   1,377.59/1,901.36 = 880.14/x
3. Step 3: Cross multiply
   1,377.59x = 1,901.36 × 880.14
4. Step 4: Simplify right side
   1,377.59x = 1,673,453.84
5. Step 5: Solve for x
   x = 1,673,453.84/1,377.59
6. Step 6: Final answer
   x = 1,214.77