Finding the Fourth Proportional to 1,522.10, 2,100.51 and 858.93

Step by Step Solution

1. Step 1: Write the proportion equation
   1,522.10 : 2,100.51 = 858.93 : x
2. Step 2: Convert to fraction form
   1,522.10/2,100.51 = 858.93/x
3. Step 3: Cross multiply
   1,522.10x = 2,100.51 × 858.93
4. Step 4: Simplify right side
   1,522.10x = 1,804,191.05
5. Step 5: Solve for x
   x = 1,804,191.05/1,522.10
6. Step 6: Final answer
   x = 1,185.33