Finding the Fourth Proportional to 1,646.01, 2,271.69 and 947.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,646.01 : 2,271.69 = 947.25 : x
2. Step 2: Convert to fraction form
   1,646.01/2,271.69 = 947.25/x
3. Step 3: Cross multiply
   1,646.01x = 2,271.69 × 947.25
4. Step 4: Simplify right side
   1,646.01x = 2,151,858.35
5. Step 5: Solve for x
   x = 2,151,858.35/1,646.01
6. Step 6: Final answer
   x = 1,307.32