Finding the Fourth Proportional to 1,191,504.72, 1,645,068.33 and 915,370.79

Step by Step Solution

1. Step 1: Write the proportion equation
   1,191,504.72 : 1,645,068.33 = 915,370.79 : x
2. Step 2: Convert to fraction form
   1,191,504.72/1,645,068.33 = 915,370.79/x
3. Step 3: Cross multiply
   1,191,504.72x = 1,645,068.33 × 915,370.79
4. Step 4: Simplify right side
   1,191,504.72x = 1,505,847,492,259.23
5. Step 5: Solve for x
   x = 1,505,847,492,259.23/1,191,504.72
6. Step 6: Final answer
   x = 1,263,820.00