Finding the Fourth Proportional to 1,522.08, 2,100.58 and 858.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.08 : 2,100.58 = 858.96 : x
2. Step 2: Convert to fraction form
   1,522.08/2,100.58 = 858.96/x
3. Step 3: Cross multiply
   1,522.08x = 2,100.58 × 858.96
4. Step 4: Simplify right side
   1,522.08x = 1,804,314.20
5. Step 5: Solve for x
   x = 1,804,314.20/1,522.08
6. Step 6: Final answer
   x = 1,185.43