Finding the Fourth Proportional to 1,712,907.99, 2,569,161.98 and 688,196.78

Step by Step Solution

1. Step 1: Write the proportion equation
   1,712,907.99 : 2,569,161.98 = 688,196.78 : x
2. Step 2: Convert to fraction form
   1,712,907.99/2,569,161.98 = 688,196.78/x
3. Step 3: Cross multiply
   1,712,907.99x = 2,569,161.98 × 688,196.78
4. Step 4: Simplify right side
   1,712,907.99x = 1,768,089,005,776.59
5. Step 5: Solve for x
   x = 1,768,089,005,776.59/1,712,907.99
6. Step 6: Final answer
   x = 1,032,214.82