Finding the Fourth Proportional to 1,528,069.72, 2,108,793.12 and 916,322.08

Step by Step Solution

1. Step 1: Write the proportion equation
   1,528,069.72 : 2,108,793.12 = 916,322.08 : x
2. Step 2: Convert to fraction form
   1,528,069.72/2,108,793.12 = 916,322.08/x
3. Step 3: Cross multiply
   1,528,069.72x = 2,108,793.12 × 916,322.08
4. Step 4: Simplify right side
   1,528,069.72x = 1,932,333,698,008.09
5. Step 5: Solve for x
   x = 1,932,333,698,008.09/1,528,069.72
6. Step 6: Final answer
   x = 1,264,558.59