Finding the Fourth Proportional to 2,602.97, 3,906.50 and 1,215.59

Step by Step Solution

1. Step 1: Write the proportion equation
   2,602.97 : 3,906.50 = 1,215.59 : x
2. Step 2: Convert to fraction form
   2,602.97/3,906.50 = 1,215.59/x
3. Step 3: Cross multiply
   2,602.97x = 3,906.50 × 1,215.59
4. Step 4: Simplify right side
   2,602.97x = 4,748,702.34
5. Step 5: Solve for x
   x = 4,748,702.34/2,602.97
6. Step 6: Final answer
   x = 1,824.34