Finding the Fourth Proportional to 2,663.46, 3,670.38 and 1,916.10

Step by Step Solution

1. Step 1: Write the proportion equation
   2,663.46 : 3,670.38 = 1,916.10 : x
2. Step 2: Convert to fraction form
   2,663.46/3,670.38 = 1,916.10/x
3. Step 3: Cross multiply
   2,663.46x = 3,670.38 × 1,916.10
4. Step 4: Simplify right side
   2,663.46x = 7,032,815.12
5. Step 5: Solve for x
   x = 7,032,815.12/2,663.46
6. Step 6: Final answer
   x = 2,640.48