Finding the Fourth Proportional to 1,224,662.55, 1,690,077.69 and 673,420.25

Step by Step Solution

1. Step 1: Write the proportion equation
   1,224,662.55 : 1,690,077.69 = 673,420.25 : x
2. Step 2: Convert to fraction form
   1,224,662.55/1,690,077.69 = 673,420.25/x
3. Step 3: Cross multiply
   1,224,662.55x = 1,690,077.69 × 673,420.25
4. Step 4: Simplify right side
   1,224,662.55x = 1,138,132,532,068.83
5. Step 5: Solve for x
   x = 1,138,132,532,068.83/1,224,662.55
6. Step 6: Final answer
   x = 929,343.79