Finding the Fourth Proportional to 1,923.98, 2,886.51 and 770.54

Step by Step Solution

1. Step 1: Write the proportion equation
   1,923.98 : 2,886.51 = 770.54 : x
2. Step 2: Convert to fraction form
   1,923.98/2,886.51 = 770.54/x
3. Step 3: Cross multiply
   1,923.98x = 2,886.51 × 770.54
4. Step 4: Simplify right side
   1,923.98x = 2,224,171.42
5. Step 5: Solve for x
   x = 2,224,171.42/1,923.98
6. Step 6: Final answer
   x = 1,156.03