Finding the Fourth Proportional to 2,453.31, 3,384.86 and 1,521.81

Step by Step Solution

1. Step 1: Write the proportion equation
   2,453.31 : 3,384.86 = 1,521.81 : x
2. Step 2: Convert to fraction form
   2,453.31/3,384.86 = 1,521.81/x
3. Step 3: Cross multiply
   2,453.31x = 3,384.86 × 1,521.81
4. Step 4: Simplify right side
   2,453.31x = 5,151,106.19
5. Step 5: Solve for x
   x = 5,151,106.19/2,453.31
6. Step 6: Final answer
   x = 2,099.66