Finding the Fourth Proportional to 1,916.31, 2,870.42 and 1,094.16

Step by Step Solution

1. Step 1: Write the proportion equation
   1,916.31 : 2,870.42 = 1,094.16 : x
2. Step 2: Convert to fraction form
   1,916.31/2,870.42 = 1,094.16/x
3. Step 3: Cross multiply
   1,916.31x = 2,870.42 × 1,094.16
4. Step 4: Simplify right side
   1,916.31x = 3,140,693.28
5. Step 5: Solve for x
   x = 3,140,693.28/1,916.31
6. Step 6: Final answer
   x = 1,638.93