Finding the Fourth Proportional to 2,829,139.28, 4,243,667.32 and 699,223.60

Step by Step Solution

1. Step 1: Write the proportion equation
   2,829,139.28 : 4,243,667.32 = 699,223.60 : x
2. Step 2: Convert to fraction form
   2,829,139.28/4,243,667.32 = 699,223.60/x
3. Step 3: Cross multiply
   2,829,139.28x = 4,243,667.32 × 699,223.60
4. Step 4: Simplify right side
   2,829,139.28x = 2,967,272,340,692.75
5. Step 5: Solve for x
   x = 2,967,272,340,692.75/2,829,139.28
6. Step 6: Final answer
   x = 1,048,825.12