Finding the Fourth Proportional to 1,858.34, 2,564.52 and 1,072.42

Step by Step Solution

1. Step 1: Write the proportion equation
   1,858.34 : 2,564.52 = 1,072.42 : x
2. Step 2: Convert to fraction form
   1,858.34/2,564.52 = 1,072.42/x
3. Step 3: Cross multiply
   1,858.34x = 2,564.52 × 1,072.42
4. Step 4: Simplify right side
   1,858.34x = 2,750,242.54
5. Step 5: Solve for x
   x = 2,750,242.54/1,858.34
6. Step 6: Final answer
   x = 1,479.95