Finding the Fourth Proportional to 766,820.42, 1,149,680.55 and 293,106.50

Step by Step Solution

1. Step 1: Write the proportion equation
   766,820.42 : 1,149,680.55 = 293,106.50 : x
2. Step 2: Convert to fraction form
   766,820.42/1,149,680.55 = 293,106.50/x
3. Step 3: Cross multiply
   766,820.42x = 1,149,680.55 × 293,106.50
4. Step 4: Simplify right side
   766,820.42x = 336,978,842,128.58
5. Step 5: Solve for x
   x = 336,978,842,128.58/766,820.42
6. Step 6: Final answer
   x = 439,449.49