Finding the Fourth Proportional to 2,529.44, 3,490.72 and 1,395.12

Step by Step Solution

1. Step 1: Write the proportion equation
   2,529.44 : 3,490.72 = 1,395.12 : x
2. Step 2: Convert to fraction form
   2,529.44/3,490.72 = 1,395.12/x
3. Step 3: Cross multiply
   2,529.44x = 3,490.72 × 1,395.12
4. Step 4: Simplify right side
   2,529.44x = 4,869,973.29
5. Step 5: Solve for x
   x = 4,869,973.29/2,529.44
6. Step 6: Final answer
   x = 1,925.32