Finding the Fourth Proportional to 1,916.88, 2,645.06 and 1,109.48

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.88 : 2,645.06 = 1,109.48 : x
2. Step 2: Convert to fraction form
   1,916.88/2,645.06 = 1,109.48/x
3. Step 3: Cross multiply
   1,916.88x = 2,645.06 × 1,109.48
4. Step 4: Simplify right side
   1,916.88x = 2,934,643.52
5. Step 5: Solve for x
   x = 2,934,643.52/1,916.88
6. Step 6: Final answer
   x = 1,530.95