Finding the Fourth Proportional to 1,042,914.42, 1,439,242.29 and 680,570.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,042,914.42 : 1,439,242.29 = 680,570.10 : x
2. Step 2: Convert to fraction form
   1,042,914.42/1,439,242.29 = 680,570.10/x
3. Step 3: Cross multiply
   1,042,914.42x = 1,439,242.29 × 680,570.10
4. Step 4: Simplify right side
   1,042,914.42x = 979,505,269,229.53
5. Step 5: Solve for x
   x = 979,505,269,229.53/1,042,914.42
6. Step 6: Final answer
   x = 939,200.04