Finding the Fourth Proportional to 1,551.27, 2,140.72 and 852.63

Step by Step Solution

1. Step 1: Write the proportion equation
   1,551.27 : 2,140.72 = 852.63 : x
2. Step 2: Convert to fraction form
   1,551.27/2,140.72 = 852.63/x
3. Step 3: Cross multiply
   1,551.27x = 2,140.72 × 852.63
4. Step 4: Simplify right side
   1,551.27x = 1,825,242.09
5. Step 5: Solve for x
   x = 1,825,242.09/1,551.27
6. Step 6: Final answer
   x = 1,176.61