Finding the Fourth Proportional to 1,610.55, 2,222.37 and 947.57

Step by Step Solution

1. Step 1: Write the proportion equation
   1,610.55 : 2,222.37 = 947.57 : x
2. Step 2: Convert to fraction form
   1,610.55/2,222.37 = 947.57/x
3. Step 3: Cross multiply
   1,610.55x = 2,222.37 × 947.57
4. Step 4: Simplify right side
   1,610.55x = 2,105,840.03
5. Step 5: Solve for x
   x = 2,105,840.03/1,610.55
6. Step 6: Final answer
   x = 1,307.53