Finding the Fourth Proportional to 778,978.38, 1,075,169.52 and 456,792.28

Step by Step Solution

1. Step 1: Write the proportion equation
   778,978.38 : 1,075,169.52 = 456,792.28 : x
2. Step 2: Convert to fraction form
   778,978.38/1,075,169.52 = 456,792.28/x
3. Step 3: Cross multiply
   778,978.38x = 1,075,169.52 × 456,792.28
4. Step 4: Simplify right side
   778,978.38x = 491,129,136,427.31
5. Step 5: Solve for x
   x = 491,129,136,427.31/778,978.38
6. Step 6: Final answer
   x = 630,478.52