Finding the Fourth Proportional to 2,938.30, 4,382.79 and 2,699.50

Step by Step Solution

1. Step 1: Write the proportion equation
   2,938.30 : 4,382.79 = 2,699.50 : x
2. Step 2: Convert to fraction form
   2,938.30/4,382.79 = 2,699.50/x
3. Step 3: Cross multiply
   2,938.30x = 4,382.79 × 2,699.50
4. Step 4: Simplify right side
   2,938.30x = 11,831,341.61
5. Step 5: Solve for x
   x = 11,831,341.61/2,938.30
6. Step 6: Final answer
   x = 4,026.59