Finding the Fourth Proportional to 1,078,830, 1,618,322.76 and 413,982

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,830 : 1,618,322.76 = 413,982 : x
2. Step 2: Convert to fraction form
   1,078,830/1,618,322.76 = 413,982/x
3. Step 3: Cross multiply
   1,078,830x = 1,618,322.76 × 413,982
4. Step 4: Simplify right side
   1,078,830x = 669,956,492,830.32
5. Step 5: Solve for x
   x = 669,956,492,830.32/1,078,830
6. Step 6: Final answer
   x = 621,002.84