Finding the Fourth Proportional to 1,916.53, 2,876.15 and 1,039.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.53 : 2,876.15 = 1,039.32 : x
2. Step 2: Convert to fraction form
   1,916.53/2,876.15 = 1,039.32/x
3. Step 3: Cross multiply
   1,916.53x = 2,876.15 × 1,039.32
4. Step 4: Simplify right side
   1,916.53x = 2,989,242.82
5. Step 5: Solve for x
   x = 2,989,242.82/1,916.53
6. Step 6: Final answer
   x = 1,559.72