Finding the Fourth Proportional to 1,961.72, 2,707.17 and 1,077.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,961.72 : 2,707.17 = 1,077.53 : x
2. Step 2: Convert to fraction form
   1,961.72/2,707.17 = 1,077.53/x
3. Step 3: Cross multiply
   1,961.72x = 2,707.17 × 1,077.53
4. Step 4: Simplify right side
   1,961.72x = 2,917,056.89
5. Step 5: Solve for x
   x = 2,917,056.89/1,961.72
6. Step 6: Final answer
   x = 1,486.99