Finding the Fourth Proportional to 2,978.07, 4,110.53 and 1,858.33

Step by Step Solution

1. Step 1: Write the proportion equation
   2,978.07 : 4,110.53 = 1,858.33 : x
2. Step 2: Convert to fraction form
   2,978.07/4,110.53 = 1,858.33/x
3. Step 3: Cross multiply
   2,978.07x = 4,110.53 × 1,858.33
4. Step 4: Simplify right side
   2,978.07x = 7,638,729.57
5. Step 5: Solve for x
   x = 7,638,729.57/2,978.07
6. Step 6: Final answer
   x = 2,565.00