Finding the Fourth Proportional to 1,039,980, 1,559,772.72 and 506,964.96

Step by Step Solution

1. Step 1: Write the proportion equation
   1,039,980 : 1,559,772.72 = 506,964.96 : x
2. Step 2: Convert to fraction form
   1,039,980/1,559,772.72 = 506,964.96/x
3. Step 3: Cross multiply
   1,039,980x = 1,559,772.72 × 506,964.96
4. Step 4: Simplify right side
   1,039,980x = 790,750,114,603.89
5. Step 5: Solve for x
   x = 790,750,114,603.89/1,039,980
6. Step 6: Final answer
   x = 760,351.27