Finding the Fourth Proportional to 1,527.21, 2,107.89 and 1,264.77

Step by Step Solution

1. Step 1: Write the proportion equation
   1,527.21 : 2,107.89 = 1,264.77 : x
2. Step 2: Convert to fraction form
   1,527.21/2,107.89 = 1,264.77/x
3. Step 3: Cross multiply
   1,527.21x = 2,107.89 × 1,264.77
4. Step 4: Simplify right side
   1,527.21x = 2,665,996.04
5. Step 5: Solve for x
   x = 2,665,996.04/1,527.21
6. Step 6: Final answer
   x = 1,745.66