Finding the Fourth Proportional to 1,810.42, 2,713.53 and 770.09

Step by Step Solution

1. Step 1: Write the proportion equation
   1,810.42 : 2,713.53 = 770.09 : x
2. Step 2: Convert to fraction form
   1,810.42/2,713.53 = 770.09/x
3. Step 3: Cross multiply
   1,810.42x = 2,713.53 × 770.09
4. Step 4: Simplify right side
   1,810.42x = 2,089,662.32
5. Step 5: Solve for x
   x = 2,089,662.32/1,810.42
6. Step 6: Final answer
   x = 1,154.24