Finding the Fourth Proportional to 1,777.64, 2,450.72 and 1,531.56

Step by Step Solution

1. Step 1: Write the proportion equation
   1,777.64 : 2,450.72 = 1,531.56 : x
2. Step 2: Convert to fraction form
   1,777.64/2,450.72 = 1,531.56/x
3. Step 3: Cross multiply
   1,777.64x = 2,450.72 × 1,531.56
4. Step 4: Simplify right side
   1,777.64x = 3,753,424.72
5. Step 5: Solve for x
   x = 3,753,424.72/1,777.64
6. Step 6: Final answer
   x = 2,111.47