Finding the Fourth Proportional to 1,377.48, 2,063.94 and 890.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.48 : 2,063.94 = 890.10 : x
2. Step 2: Convert to fraction form
   1,377.48/2,063.94 = 890.10/x
3. Step 3: Cross multiply
   1,377.48x = 2,063.94 × 890.10
4. Step 4: Simplify right side
   1,377.48x = 1,837,112.99
5. Step 5: Solve for x
   x = 1,837,112.99/1,377.48
6. Step 6: Final answer
   x = 1,333.68