Finding the Fourth Proportional to 1,855.02, 2,780.91 and 758.69

Step by Step Solution

1. Step 1: Write the proportion equation
   1,855.02 : 2,780.91 = 758.69 : x
2. Step 2: Convert to fraction form
   1,855.02/2,780.91 = 758.69/x
3. Step 3: Cross multiply
   1,855.02x = 2,780.91 × 758.69
4. Step 4: Simplify right side
   1,855.02x = 2,109,848.61
5. Step 5: Solve for x
   x = 2,109,848.61/1,855.02
6. Step 6: Final answer
   x = 1,137.37