Finding the Fourth Proportional to 1,377.72, 2,065.86 and 1,035

Step by Step Solution

1. Step 1: Write the proportion equation
   1,377.72 : 2,065.86 = 1,035 : x
2. Step 2: Convert to fraction form
   1,377.72/2,065.86 = 1,035/x
3. Step 3: Cross multiply
   1,377.72x = 2,065.86 × 1,035
4. Step 4: Simplify right side
   1,377.72x = 2,138,165.10
5. Step 5: Solve for x
   x = 2,138,165.10/1,377.72
6. Step 6: Final answer
   x = 1,551.96