Finding the Fourth Proportional to 1,279,404.43, 1,919,770.83 and 521,801.71

Step by Step Solution

1. Step 1: Write the proportion equation
   1,279,404.43 : 1,919,770.83 = 521,801.71 : x
2. Step 2: Convert to fraction form
   1,279,404.43/1,919,770.83 = 521,801.71/x
3. Step 3: Cross multiply
   1,279,404.43x = 1,919,770.83 × 521,801.71
4. Step 4: Simplify right side
   1,279,404.43x = 1,001,739,696,476.10
5. Step 5: Solve for x
   x = 1,001,739,696,476.10/1,279,404.43
6. Step 6: Final answer
   x = 782,973.45