Finding the Fourth Proportional to 1,155,733.89, 1,594,882.04 and 639,474.32

Step by Step Solution

1. Step 1: Write the proportion equation
   1,155,733.89 : 1,594,882.04 = 639,474.32 : x
2. Step 2: Convert to fraction form
   1,155,733.89/1,594,882.04 = 639,474.32/x
3. Step 3: Cross multiply
   1,155,733.89x = 1,594,882.04 × 639,474.32
4. Step 4: Simplify right side
   1,155,733.89x = 1,019,886,096,837.43
5. Step 5: Solve for x
   x = 1,019,886,096,837.43/1,155,733.89
6. Step 6: Final answer
   x = 882,457.55