Finding the Fourth Proportional to 2,602.64, 3,905.78 and 2,058.32

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.64 : 3,905.78 = 2,058.32 : x
2. Step 2: Convert to fraction form
   2,602.64/3,905.78 = 2,058.32/x
3. Step 3: Cross multiply
   2,602.64x = 3,905.78 × 2,058.32
4. Step 4: Simplify right side
   2,602.64x = 8,039,315.27
5. Step 5: Solve for x
   x = 8,039,315.27/2,602.64
6. Step 6: Final answer
   x = 3,088.91