Finding the Fourth Proportional to 1,843.29, 2,761.12 and 916.05

Step by Step Solution

1. Step 1: Write the proportion equation
   1,843.29 : 2,761.12 = 916.05 : x
2. Step 2: Convert to fraction form
   1,843.29/2,761.12 = 916.05/x
3. Step 3: Cross multiply
   1,843.29x = 2,761.12 × 916.05
4. Step 4: Simplify right side
   1,843.29x = 2,529,323.98
5. Step 5: Solve for x
   x = 2,529,323.98/1,843.29
6. Step 6: Final answer
   x = 1,372.18