Finding the Fourth Proportional to 1,476,200.10, 2,214,300.15 and 478,928.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,476,200.10 : 2,214,300.15 = 478,928.10 : x
2. Step 2: Convert to fraction form
   1,476,200.10/2,214,300.15 = 478,928.10/x
3. Step 3: Cross multiply
   1,476,200.10x = 2,214,300.15 × 478,928.10
4. Step 4: Simplify right side
   1,476,200.10x = 1,060,490,563,669.21
5. Step 5: Solve for x
   x = 1,060,490,563,669.21/1,476,200.10
6. Step 6: Final answer
   x = 718,392.15