Finding the Fourth Proportional to 1,073,131.60, 1,609,114.20 and 442,109.20

Step by Step Solution

1. Step 1: Write the proportion equation
   1,073,131.60 : 1,609,114.20 = 442,109.20 : x
2. Step 2: Convert to fraction form
   1,073,131.60/1,609,114.20 = 442,109.20/x
3. Step 3: Cross multiply
   1,073,131.60x = 1,609,114.20 × 442,109.20
4. Step 4: Simplify right side
   1,073,131.60x = 711,404,191,670.64
5. Step 5: Solve for x
   x = 711,404,191,670.64/1,073,131.60
6. Step 6: Final answer
   x = 662,923.53