Finding the Fourth Proportional to 1,429,323.18, 2,143,657.32 and 853,109.02

Step by Step Solution

1. Step 1: Write the proportion equation
   1,429,323.18 : 2,143,657.32 = 853,109.02 : x
2. Step 2: Convert to fraction form
   1,429,323.18/2,143,657.32 = 853,109.02/x
3. Step 3: Cross multiply
   1,429,323.18x = 2,143,657.32 × 853,109.02
4. Step 4: Simplify right side
   1,429,323.18x = 1,828,773,395,481.03
5. Step 5: Solve for x
   x = 1,828,773,395,481.03/1,429,323.18
6. Step 6: Final answer
   x = 1,279,468.09