Finding the Fourth Proportional to 1,355,196.96, 2,030,085.06 and 815,154.98

Step by Step Solution

1. Step 1: Write the proportion equation
   1,355,196.96 : 2,030,085.06 = 815,154.98 : x
2. Step 2: Convert to fraction form
   1,355,196.96/2,030,085.06 = 815,154.98/x
3. Step 3: Cross multiply
   1,355,196.96x = 2,030,085.06 × 815,154.98
4. Step 4: Simplify right side
   1,355,196.96x = 1,654,833,936,332.17
5. Step 5: Solve for x
   x = 1,654,833,936,332.17/1,355,196.96
6. Step 6: Final answer
   x = 1,221,102.16