Finding the Fourth Proportional to 1,377.12, 1,899.81 and 1,062.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.12 : 1,899.81 = 1,062.48 : x
2. Step 2: Convert to fraction form
   1,377.12/1,899.81 = 1,062.48/x
3. Step 3: Cross multiply
   1,377.12x = 1,899.81 × 1,062.48
4. Step 4: Simplify right side
   1,377.12x = 2,018,510.13
5. Step 5: Solve for x
   x = 2,018,510.13/1,377.12
6. Step 6: Final answer
   x = 1,465.75