Finding the Fourth Proportional to 1,852.72, 2,779.88 and 757.86

Step by Step Solution

1. Step 1: Write the proportion equation
   1,852.72 : 2,779.88 = 757.86 : x
2. Step 2: Convert to fraction form
   1,852.72/2,779.88 = 757.86/x
3. Step 3: Cross multiply
   1,852.72x = 2,779.88 × 757.86
4. Step 4: Simplify right side
   1,852.72x = 2,106,759.86
5. Step 5: Solve for x
   x = 2,106,759.86/1,852.72
6. Step 6: Final answer
   x = 1,137.12