Finding the Fourth Proportional to 2,485.32, 3,428.88 and 1,490.92

Step by Step Solution

1. Step 1: Write the proportion equation
   2,485.32 : 3,428.88 = 1,490.92 : x
2. Step 2: Convert to fraction form
   2,485.32/3,428.88 = 1,490.92/x
3. Step 3: Cross multiply
   2,485.32x = 3,428.88 × 1,490.92
4. Step 4: Simplify right side
   2,485.32x = 5,112,185.77
5. Step 5: Solve for x
   x = 5,112,185.77/2,485.32
6. Step 6: Final answer
   x = 2,056.95