Finding the Fourth Proportional to 1,676.10, 2,516.55 and 947.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,676.10 : 2,516.55 = 947.10 : x
2. Step 2: Convert to fraction form
   1,676.10/2,516.55 = 947.10/x
3. Step 3: Cross multiply
   1,676.10x = 2,516.55 × 947.10
4. Step 4: Simplify right side
   1,676.10x = 2,383,424.51
5. Step 5: Solve for x
   x = 2,383,424.51/1,676.10
6. Step 6: Final answer
   x = 1,422.01