Finding the Fourth Proportional to 2,780.45, 3,837.03 and 1,521.52

Step by Step Solution

1. Step 1: Write the proportion equation
   2,780.45 : 3,837.03 = 1,521.52 : x
2. Step 2: Convert to fraction form
   2,780.45/3,837.03 = 1,521.52/x
3. Step 3: Cross multiply
   2,780.45x = 3,837.03 × 1,521.52
4. Step 4: Simplify right side
   2,780.45x = 5,838,102.59
5. Step 5: Solve for x
   x = 5,838,102.59/2,780.45
6. Step 6: Final answer
   x = 2,099.70