Finding the Fourth Proportional to 1,015,870.24, 1,401,825.28 and 556,911.36

Step by Step Solution

1. Step 1: Write the proportion equation
   1,015,870.24 : 1,401,825.28 = 556,911.36 : x
2. Step 2: Convert to fraction form
   1,015,870.24/1,401,825.28 = 556,911.36/x
3. Step 3: Cross multiply
   1,015,870.24x = 1,401,825.28 × 556,911.36
4. Step 4: Simplify right side
   1,015,870.24x = 780,692,423,167.18
5. Step 5: Solve for x
   x = 780,692,423,167.18/1,015,870.24
6. Step 6: Final answer
   x = 768,496.20