Finding the Fourth Proportional to 1,089,970.02, 1,635,066.51 and 416,618.10

Step by Step Solution

1. Step 1: Write the proportion equation
   1,089,970.02 : 1,635,066.51 = 416,618.10 : x
2. Step 2: Convert to fraction form
   1,089,970.02/1,635,066.51 = 416,618.10/x
3. Step 3: Cross multiply
   1,089,970.02x = 1,635,066.51 × 416,618.10
4. Step 4: Simplify right side
   1,089,970.02x = 681,198,302,769.83
5. Step 5: Solve for x
   x = 681,198,302,769.83/1,089,970.02
6. Step 6: Final answer
   x = 624,969.76