Finding the Fourth Proportional to 1,936.76, 2,916.45 and 1,392.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,936.76 : 2,916.45 = 1,392.71 : x
2. Step 2: Convert to fraction form
   1,936.76/2,916.45 = 1,392.71/x
3. Step 3: Cross multiply
   1,936.76x = 2,916.45 × 1,392.71
4. Step 4: Simplify right side
   1,936.76x = 4,061,754.50
5. Step 5: Solve for x
   x = 4,061,754.50/1,936.76
6. Step 6: Final answer
   x = 2,097.20