Finding the Fourth Proportional to 1,002.33, 1,505.16 and 620.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002.33 : 1,505.16 = 620.01 : x
2. Step 2: Convert to fraction form
   1,002.33/1,505.16 = 620.01/x
3. Step 3: Cross multiply
   1,002.33x = 1,505.16 × 620.01
4. Step 4: Simplify right side
   1,002.33x = 933,214.25
5. Step 5: Solve for x
   x = 933,214.25/1,002.33
6. Step 6: Final answer
   x = 931.04