Finding the Fourth Proportional to 1,610.89, 2,223.32 and 947.70

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.89 : 2,223.32 = 947.70 : x
2. Step 2: Convert to fraction form
   1,610.89/2,223.32 = 947.70/x
3. Step 3: Cross multiply
   1,610.89x = 2,223.32 × 947.70
4. Step 4: Simplify right side
   1,610.89x = 2,107,035.63
5. Step 5: Solve for x
   x = 2,107,035.63/1,610.89
6. Step 6: Final answer
   x = 1,308.00