Finding the Fourth Proportional to 1,526.59, 2,106.71 and 905.59

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.59 : 2,106.71 = 905.59 : x
2. Step 2: Convert to fraction form
   1,526.59/2,106.71 = 905.59/x
3. Step 3: Cross multiply
   1,526.59x = 2,106.71 × 905.59
4. Step 4: Simplify right side
   1,526.59x = 1,907,810.98
5. Step 5: Solve for x
   x = 1,907,810.98/1,526.59
6. Step 6: Final answer
   x = 1,249.72