Finding the Fourth Proportional to 1,574.30, 2,172.43 and 866.00

Step by Step Solution

1. Step 1: Write the proportion equation
   1,574.30 : 2,172.43 = 866.00 : x
2. Step 2: Convert to fraction form
   1,574.30/2,172.43 = 866.00/x
3. Step 3: Cross multiply
   1,574.30x = 2,172.43 × 866.00
4. Step 4: Simplify right side
   1,574.30x = 1,881,314.60
5. Step 5: Solve for x
   x = 1,881,314.60/1,574.30
6. Step 6: Final answer
   x = 1,195.02