Finding the Fourth Proportional to 881,401.57, 1,208,412.73 and 865,458.34

Step by Step Solution

1. Step 1: Write the proportion equation
   881,401.57 : 1,208,412.73 = 865,458.34 : x
2. Step 2: Convert to fraction form
   881,401.57/1,208,412.73 = 865,458.34/x
3. Step 3: Cross multiply
   881,401.57x = 1,208,412.73 × 865,458.34
4. Step 4: Simplify right side
   881,401.57x = 1,045,830,875,340.67
5. Step 5: Solve for x
   x = 1,045,830,875,340.67/881,401.57
6. Step 6: Final answer
   x = 1,186,554.36