Finding the Fourth Proportional to 1,189,131.59, 1,783,969.86 and 515,326.01

Step by Step Solution

1. Step 1: Write the proportion equation
   1,189,131.59 : 1,783,969.86 = 515,326.01 : x
2. Step 2: Convert to fraction form
   1,189,131.59/1,783,969.86 = 515,326.01/x
3. Step 3: Cross multiply
   1,189,131.59x = 1,783,969.86 × 515,326.01
4. Step 4: Simplify right side
   1,189,131.59x = 919,326,069,914.06
5. Step 5: Solve for x
   x = 919,326,069,914.06/1,189,131.59
6. Step 6: Final answer
   x = 773,107.10