Finding the Fourth Proportional to 2,156,924.79, 2,976,819.83 and 1,239,152.21

Step by Step Solution

1. Step 1: Write the proportion equation
   2,156,924.79 : 2,976,819.83 = 1,239,152.21 : x
2. Step 2: Convert to fraction form
   2,156,924.79/2,976,819.83 = 1,239,152.21/x
3. Step 3: Cross multiply
   2,156,924.79x = 2,976,819.83 × 1,239,152.21
4. Step 4: Simplify right side
   2,156,924.79x = 3,688,732,871,116.32
5. Step 5: Solve for x
   x = 3,688,732,871,116.32/2,156,924.79
6. Step 6: Final answer
   x = 1,710,181.50