Finding the Fourth Proportional to 1,610.82, 2,223.02 and 947.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.82 : 2,223.02 = 947.86 : x
2. Step 2: Convert to fraction form
   1,610.82/2,223.02 = 947.86/x
3. Step 3: Cross multiply
   1,610.82x = 2,223.02 × 947.86
4. Step 4: Simplify right side
   1,610.82x = 2,107,111.74
5. Step 5: Solve for x
   x = 2,107,111.74/1,610.82
6. Step 6: Final answer
   x = 1,308.10