Finding the Fourth Proportional to 1,373.67, 2,056.05 and 880.38

Step by Step Solution

1. Step 1: Write the proportion equation
   1,373.67 : 2,056.05 = 880.38 : x
2. Step 2: Convert to fraction form
   1,373.67/2,056.05 = 880.38/x
3. Step 3: Cross multiply
   1,373.67x = 2,056.05 × 880.38
4. Step 4: Simplify right side
   1,373.67x = 1,810,105.30
5. Step 5: Solve for x
   x = 1,810,105.30/1,373.67
6. Step 6: Final answer
   x = 1,317.71