Finding the Fourth Proportional to 1,170.01, 1,614.61 and 646.04

Step by Step Solution

1. Step 1: Write the proportion equation
   1,170.01 : 1,614.61 = 646.04 : x
2. Step 2: Convert to fraction form
   1,170.01/1,614.61 = 646.04/x
3. Step 3: Cross multiply
   1,170.01x = 1,614.61 × 646.04
4. Step 4: Simplify right side
   1,170.01x = 1,043,096.59
5. Step 5: Solve for x
   x = 1,043,096.59/1,170.01
6. Step 6: Final answer
   x = 891.53