Finding the Fourth Proportional to 1,006.53, 1,388.71 and 652.46

Step by Step Solution

1. Step 1: Write the proportion equation
   1,006.53 : 1,388.71 = 652.46 : x
2. Step 2: Convert to fraction form
   1,006.53/1,388.71 = 652.46/x
3. Step 3: Cross multiply
   1,006.53x = 1,388.71 × 652.46
4. Step 4: Simplify right side
   1,006.53x = 906,071.60
5. Step 5: Solve for x
   x = 906,071.60/1,006.53
6. Step 6: Final answer
   x = 900.20