Finding the Fourth Proportional to 1,916.98, 2,645.33 and 1,077.82

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.98 : 2,645.33 = 1,077.82 : x
2. Step 2: Convert to fraction form
   1,916.98/2,645.33 = 1,077.82/x
3. Step 3: Cross multiply
   1,916.98x = 2,645.33 × 1,077.82
4. Step 4: Simplify right side
   1,916.98x = 2,851,177.58
5. Step 5: Solve for x
   x = 2,851,177.58/1,916.98
6. Step 6: Final answer
   x = 1,487.33