Finding the Fourth Proportional to 1,994.42, 2,752.61 and 1,521.51

Step by Step Solution

1. Step 1: Write the proportion equation
   1,994.42 : 2,752.61 = 1,521.51 : x
2. Step 2: Convert to fraction form
   1,994.42/2,752.61 = 1,521.51/x
3. Step 3: Cross multiply
   1,994.42x = 2,752.61 × 1,521.51
4. Step 4: Simplify right side
   1,994.42x = 4,188,123.64
5. Step 5: Solve for x
   x = 4,188,123.64/1,994.42
6. Step 6: Final answer
   x = 2,099.92