Finding the Fourth Proportional to 2,916.61, 4,374.01 and 836.05

Step by Step Solution

1. Step 1: Write the proportion equation
   2,916.61 : 4,374.01 = 836.05 : x
2. Step 2: Convert to fraction form
   2,916.61/4,374.01 = 836.05/x
3. Step 3: Cross multiply
   2,916.61x = 4,374.01 × 836.05
4. Step 4: Simplify right side
   2,916.61x = 3,656,904.09
5. Step 5: Solve for x
   x = 3,656,904.09/2,916.61
6. Step 6: Final answer
   x = 1,253.82