Finding the Fourth Proportional to 1,214,088.32, 1,821,131.52 and 315,454.72

Step by Step Solution

1. Step 1: Write the proportion equation
   1,214,088.32 : 1,821,131.52 = 315,454.72 : x
2. Step 2: Convert to fraction form
   1,214,088.32/1,821,131.52 = 315,454.72/x
3. Step 3: Cross multiply
   1,214,088.32x = 1,821,131.52 × 315,454.72
4. Step 4: Simplify right side
   1,214,088.32x = 574,484,533,724.77
5. Step 5: Solve for x
   x = 574,484,533,724.77/1,214,088.32
6. Step 6: Final answer
   x = 473,181.83