Finding the Fourth Proportional to 1,526.40, 2,106.54 and 936.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.40 : 2,106.54 = 936.72 : x
2. Step 2: Convert to fraction form
   1,526.40/2,106.54 = 936.72/x
3. Step 3: Cross multiply
   1,526.40x = 2,106.54 × 936.72
4. Step 4: Simplify right side
   1,526.40x = 1,973,238.15
5. Step 5: Solve for x
   x = 1,973,238.15/1,526.40
6. Step 6: Final answer
   x = 1,292.74