Finding the Fourth Proportional to 1,525.81, 2,290.61 and 1,518.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,525.81 : 2,290.61 = 1,518.79 : x
2. Step 2: Convert to fraction form
   1,525.81/2,290.61 = 1,518.79/x
3. Step 3: Cross multiply
   1,525.81x = 2,290.61 × 1,518.79
4. Step 4: Simplify right side
   1,525.81x = 3,478,955.56
5. Step 5: Solve for x
   x = 3,478,955.56/1,525.81
6. Step 6: Final answer
   x = 2,280.07