Finding the Fourth Proportional to 1,526.40, 2,290.86 and 1,308.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,526.40 : 2,290.86 = 1,308.42 : x
2. Step 2: Convert to fraction form
   1,526.40/2,290.86 = 1,308.42/x
3. Step 3: Cross multiply
   1,526.40x = 2,290.86 × 1,308.42
4. Step 4: Simplify right side
   1,526.40x = 2,997,407.04
5. Step 5: Solve for x
   x = 2,997,407.04/1,526.40
6. Step 6: Final answer
   x = 1,963.71