Finding the Fourth Proportional to 779,012, 1,075,036.56 and 421,316

Step by Step Solution

1. Step 1: Write the proportion equation
   779,012 : 1,075,036.56 = 421,316 : x
2. Step 2: Convert to fraction form
   779,012/1,075,036.56 = 421,316/x
3. Step 3: Cross multiply
   779,012x = 1,075,036.56 × 421,316
4. Step 4: Simplify right side
   779,012x = 452,930,103,312.96
5. Step 5: Solve for x
   x = 452,930,103,312.96/779,012
6. Step 6: Final answer
   x = 581,416.08