Finding the Fourth Proportional to 1,071,523.47, 1,478,594.72 and 641,792.55

Step by Step Solution

1. Step 1: Write the proportion equation
   1,071,523.47 : 1,478,594.72 = 641,792.55 : x
2. Step 2: Convert to fraction form
   1,071,523.47/1,478,594.72 = 641,792.55/x
3. Step 3: Cross multiply
   1,071,523.47x = 1,478,594.72 × 641,792.55
4. Step 4: Simplify right side
   1,071,523.47x = 948,951,075,765.34
5. Step 5: Solve for x
   x = 948,951,075,765.34/1,071,523.47
6. Step 6: Final answer
   x = 885,609.23