Finding the Fourth Proportional to 877,386, 1,210,794.30 and 474,978

Step by Step Solution

1. Step 1: Write the proportion equation
   877,386 : 1,210,794.30 = 474,978 : x
2. Step 2: Convert to fraction form
   877,386/1,210,794.30 = 474,978/x
3. Step 3: Cross multiply
   877,386x = 1,210,794.30 × 474,978
4. Step 4: Simplify right side
   877,386x = 575,100,655,025.40
5. Step 5: Solve for x
   x = 575,100,655,025.40/877,386
6. Step 6: Final answer
   x = 655,470.52