Finding the Fourth Proportional to 1,698.37, 2,535.93 and 1,521.53

Step by Step Solution

1. Step 1: Write the proportion equation
   1,698.37 : 2,535.93 = 1,521.53 : x
2. Step 2: Convert to fraction form
   1,698.37/2,535.93 = 1,521.53/x
3. Step 3: Cross multiply
   1,698.37x = 2,535.93 × 1,521.53
4. Step 4: Simplify right side
   1,698.37x = 3,858,480.89
5. Step 5: Solve for x
   x = 3,858,480.89/1,698.37
6. Step 6: Final answer
   x = 2,271.88