Finding the Fourth Proportional to 1,012.86, 1,522.17 and 602.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,012.86 : 1,522.17 = 602.10 : x
2. Step 2: Convert to fraction form
   1,012.86/1,522.17 = 602.10/x
3. Step 3: Cross multiply
   1,012.86x = 1,522.17 × 602.10
4. Step 4: Simplify right side
   1,012.86x = 916,498.56
5. Step 5: Solve for x
   x = 916,498.56/1,012.86
6. Step 6: Final answer
   x = 904.86